College of Public Health

David L. Johnson, PhD, PE, DEE, CIH

Presidential Professor of Occupational & Environmental Health

University of Oklahoma Health Sciences Center
801 Northeast 13^th Street, Room 431
Post Office Box 26901
Oklahoma City, Oklahoma 73126-0901
Tel: (405) 271-8001 ext 46776
Fax: (405) 271-1971

E-mail:David-Johnson@ouhsc.edu

EDUCATION:
University of North Carolina at Chapel Hill, PhD in Environmental Sciences & Engineering, 1985
University of Texas at Austin, MS in Engineering, 1980
University of Texas at Austin, BS in Civil Engineering, 1975

PROFESSIONAL EXPERIENCE:

July 2004 - June 2009 - Associate Dean for Academic Affairs, College of Public Health, and Professor of Occupational and Environmental Health, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma.
October 2002 - August 2004 - Director, Southwest Center for Public Health Preparedness.
July 2002 - June 2004 - Professor and Chair of Occupational and Environmental Health, College of Public Health, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma.
July 2001 - June 2002 - Professor and Vice Chair of Occupational and Environmental Health, College of Public Health, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma.
July 2001 - Present - Professor of Occupational and Environmental Health, College of Public Health, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma.
July 1997 - June 2001 - Associate Professor and Vice Chair of Occupational and Environmental Health, College of Public Health, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma.
September 1991 - June 1997 - Associate Professor of Occupational and Environmental Health, College of Public Health, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma.
1975-1991 - Sanitary Engineer, US Army Medical Service Corps.

HONORS, MEMBERSHIPS, AND CERTIFICATIONS:
Honors Graduate in Civil Engineering, University of Texas at Austin
Outstanding Teacher of the Year, 1999-2000, OUHSC Occupational and Environmental Health Student Association
Outstanding Teacher of the Year, 2000-2001, OUHSC College of Public Health Student Association
Member, Xi Chapter of the Delta Omega Honorary Public Health Society
Diplomat of the Academy of Industrial Hygiene (Certified Industrial Hygienist)
Diplomate Environmental Engineer, American Academy of Environmental Engineers
Member, American Industrial Hygiene Association (AIHA)
Member, Oklahoma Local Section of the AIHA
Member, British Occupational Hygiene Society (BOHS)
Member, American Conference of Governmental Industrial Hygienists (ACGIH)
Member, American Association for Aerosol Research (AAAR)
Registered Professional Engineer - State of Oklahoma
University of Oklahoma President's Associates Presidential Professor

RESEARCH INTERESTS:
Occupational and environmental epidemiology
Occupational exposure assessment and control
Aerosol behavior and characterization
Pharmaceutical aerosol drug delivery systems
Indoor air quality

PUBLICATIONS:

Peer Reviewed Publications Accepted or in Print

Johnson, David L., Robert A. Lynch, and Kenneth R. Mead (2009). Containment Effectiveness of Expedient Patient Isolation Units. American Journal of Infection Control 37(2):94-100.

Johnson, David L., David M. Thompson, Rodney E. Clinkenbeard, and Jason Redus (2008). Professional Judgment and the Interpretation of Viable Mold Air Sampling Data. Journal of Occupational and Environmental Hygiene 5(10):656-663.

Johnson, David L. and Robert A. Lynch (2008). An Efficient Analytical Method for Evaluating Airborne Infectious Isolation Containment using Fluorescence Microspheres. Journal of Occupational and Environmental Hygiene 5(4):271-277.

Brand, Michael, Dave Kerby, Brenda Elledge, David Johnson, and Olga Magas (2006). A Model for Assessing Public Health Emergency Preparedness Competencies and Evaluating Training Based on the Local Preparedness Plan. Journal of Homeland Security and Emergency Management 3(2):Article 3. Available for download at http://www.bepress.com/jhsem/vol3/iss2/3 .

Wong-Beringer, A., M.P. Lambros, P.M. Beringer, and D.L. Johnson (2005). Suitability of inhaled caspofungin for prevention of pulmonary aspergillosis: physicochemical profiling and nebulizer choice. Chest 128(5):3711-3716.

Estrada, Librada C., Michael R. Fraser, Joan P. Cioffi, DeAnne Sesker, Laurie Walkner, Michael W. Brand, Dave S. Kerby, David L. Johnson, Anna Jean Kurzyna, and Lou Brewer (2005). Partnering for Preparedness: The Project Public Health Ready Experience. Public Health Reports 120 (Suppl 1):69-75.

Kerby, Dave S., Michael W. Brand, Brenda L. Elledge, David L. Johnson, and Olga K. Magas (2005). Are Public Health Workers Aware of What They Don’t Know? Biosecurity and Terrorism 3(1):31-38.

Kerby, D.S., M.W. Brand, D.L. Johnson, and F.S. Ghouri (2005). Self-Assessment in the Measurement of Public Health Workforce Preparedness for Bioterrorism or Other Public Health Disasters. Public Health Reports 120:186-191.

Mead, Kenneth and David L. Johnson (2004). An Evaluation of Portable HEPA Filtration for Expedient Patient Isolation in Epidemic and Emergency Response. Annals of Emergency Medicine 44(6):635-645.

Johnson, D.L. and N.A. Esmen (2004). Method Induced Misclassification for a Respirable Dust Sampled Using ISO/ACGIH/CEN Criteria. Annals of Occupational Hygiene 48(1):13-20.

Carlton, Gary N., Kalpesh B. Patel, David L. Johnson, and Thomas A. Hall (2003). The Effectiveness of Hand-Held Ventilated Sanders in Reducing Inhalable Dust Concentrations. Applied Occupational and Environmental Hygiene 18(1):51-56.

Clinkenbeard, R.E., E.C. England, D.L. Johnson, N.A. Esmen, and T.A. Hall (2002). Comparison of the IOM Inhalable Aerosol Sampler and a Modified 37-mm Cassette During Aircraft Corrosion Control Maintenance. Applied Occupational and Environmental Hygiene 17(9):622-627.

Fechter, L.D., D.L. Johnson, and R.A. Lynch (2002). The Relationship of Particle Size to Olfactory Nerve Uptake of a Non-Soluble Form of Manganese into Brain. NeuroToxicology 23:177-184.

Esmen, N.A., D.L. Johnson, and G.M. Agron (2002). The Variability of Delivered Dose of Aerosols with the Same Respirable Concentration but Different Size Distributions. Annals of Occupational Hygiene 46:401-407.

Stone, R.C. and D.L. Johnson (2002). A Note on the Effect of Nebulization Time and Pressure on the Culturability of Bacillus subtilis and Pseudomonas fluorescens. Aerosol Science and Technology 36:536-539.

Clinkenbeard, R.E., D.L. Johnson, R. Parthasarathy, C. Altan, K.H. Tan, R.H. Crawford, and S.M. Park (2002). Replication of Human Tracheobronchial Hollow Airway Models Using a Selective Laser Sintering Rapid Prototyping Technique. American Industrial Hygiene Association Journal 63(2):141-150.

Johnson, D.L. and M.L. Phillips (2002). UV Disinfection of Soluble Oil Metalworking Fluids. American Industrial Hygiene Association Journal 63(2):178-183.

Fechter, L.D., G.-D. Chen, and D.L. Johnson (2002). Potentiation of Noise Induced Hearing Loss by Low Concentrations of Hydrogen Cyanide in Rats. Toxicological Sciences 66:131-138.

Esmen, N.A. and D.L. Johnson (2001). Simulation Analysis of Inhalable Dust Sampling Errors Using a Multi-Component Error Model. Aerosol Science and Technology 35:824-828.

Phillips, M.L., T.A. Hall, N.A. Esmen, R. Lynch, and D.L. Johnson (2001). Use of Global Positioning System Technology to Track Subjects' Location During Environmental Exposure Sampling. Journal of Exposure Analysis and Environmental Epidemiology 11:207-215.

Phillips, M.L., C.C. Meagher, and D.L. Johnson (2001). What is "Powder-Free?" Characterization of Powder Aerosol Produced During Simulated Use of Powdered and Powder-Free Latex Gloves. Occupational and Environmental Medicine 58:479-481.

Johnson, D.L., N.A. Esmen, K.D. Carlson, T.A. Pearce, and B.N. Thomas (2000). Aerodynamic Behavior of Lipid Microtubule Aerosols. Journal of Aerosol Science, 31(2):181-188.

Johnson, D.L., K.D. Carlson, T.A. Pearce, N.A. Esmen, and B.N. Thomas (1999). Effects of Nebulization Time and Pressure on Lipid Microtubule Suspension and Aerosol. Aerosol Science and Technology 30(2):211-222.

Johnson, D.L., T.A. Pearce, and N.A. Esmen (1999). The Effect of Phosphate Buffer on Aerosol Size Distribution of Nebulized Gram-Positive and Gram-Negative Bacteria. Aerosol Science and Technology 30(2):202-210.

Johnson, D.L. and T.A. Pearce (1998). Efficiency of a Low-Energy Wetted-Surface Multi-Annulus Denuder Sampler for Viable and Non-Viable Aerosol Collection. Aerosol Science and Technology, 28(3): 269-279.

Polikandritou-Lambros, M., D.A.W. Bourne, S.A. Abbas, and D.L. Johnson (1997). Lung Clearance Kinetics of Inhaled Liposomal Amphotericin B Aerosol in Balb/C Mice. Journal of Pharmaceutical Sciences, 86(9): 1066-1069.

Bergman, T.A., D.L. Johnson, D.T. Boatright, K.G. Smallwood, and R.J. Rando (1996). Occupational Exposure of Nonsmoking Nightclub Musicians to Environmental Tobacco Smoke. American Industrial Hygiene Association Journal, 57: 746-752.

Johnson, D.L., S.P. Sullivan, and G. Jones (1996). A Survey of Emergency Response Planning as Practiced in Boiler/Industrial Furnace Facilities Burning Hazardous Waste Derived Fuels. Journal of Environmental Health, 59(1) (July/August): 12-18.

Johnson, D.L., N.A. Esmen, and M. Polikandritou-Lambros (1996). Spinning Disk Aerosol Generators as a Low Energy Alternative to Medical Air-Jet Nebulizers: Theory and Experiment. Journal of Aerosols in Medicine, 9(2): 249.261.

Johnson, D.L., E.N. Wenger, and M. Polikandritou-Lambros (1996). Aerosolization and Hygroscopic Growth Evaluation of Lyophilized Liposome Aerosols Under Controlled Temperature and Relative Humidity Conditions. Aerosol Science and Technology, 25(1): 22-30.

Johnson, D.L., M. Polikandritou-Lambros, and T.B. Martonen (1996). Drug Encapsulation and Aerodynamic Behavior of a Lipid Microtubule Aerosol. Drug Delivery, 3(1): 9-15.

Johnson, D.L. and L.D. Fechter (1996). Performance of an Automatic Feedback Control Vapor Generation System During Near-Continuous Inhalation Exposures. Inhalation Toxicology, 8(4): 423-431.

Johnson, D.L., E.G. Hagstrom, and L.D.Fechter (1995). Automatic Feedback Control of a Vapor Generation System Using Off-the-Shelf Components. Inhalation Toxicology, 7(9): 1293-1303.

Johnson, D.L. and T.B. Martonen (1994). Predicted and Observed Behavior of Platelet Aerosols. Particulate Science and Technology, 12(2): 149-159.

Johnson, D.L. and T.B. Martonen (1994). The Behavior of Inhaled Fibers: Applications to Medicinal Aerosols. Particulate Science and Technology, 12(2): 161-173.

Johnson, D.L. and T.B. Martonen (1993). Fiber Deposition Along Airway Walls: Effects of Fiber Cross-Section on Rotational Interception. Journal of Aerosol Science, 24(4): 525-536.

Johnson, D.L. and M.L. Bell (1991). Sources and Control of Errors in Industrial Hygiene Measurements. Journal of the American Association of Occupational Health Nurses, 39(8): 362-368.

Martonen, T.B. and D.L. Johnson (1990). Aerodynamic Classification of Fibers with Aerosol Centrifuges. Particulate Science and Technology, 8: 37-53.

Johnson, David L. and Ted B. Martonen (1989). Aerosol Characterization with Centrifugal Aerosol Spectrometers: Theory and Experiment. American Industrial Hygiene Association Journal, 50(8): 408-412.

Johnson, David L., David Leith, and Parker C. Reist (1987). Drag on Non-Spherical, Orthotropic Aerosol Particles. Journal of Aerosol Science, 18(1): 87-97.

Johnson, D.L. (1985). Viscous Drag on Orthotropic Aerosol Particles. Doctoral Dissertation, University of North Carolina at Chapel Hill, North Carolina.

Johnson, D.L. (1980). Health Effects of Particulate Diesel Exhaust Emissions. Masters Thesis, University of Texas at Austin, Texas.

Books:

Bolton, F.N. and D.L. Johnson (Eds.). Engineering Reference Manual, 2nd Edition. American Industrial Hygiene Association, Fairfax, VA, 1999. (Named 1999 AIHA Outstanding Technical Committee Publication)

Book Chapters:

Johnson, David and James Vincent (2003). Sampling and Sizing Airborne Particles. In The Occupational Environment: Its Evaluation and Control, 2nd Edition (Edited by S. R. DiNardi). American Industrial Hygiene Association, Fairfax, VA, pp. 202-223.
Johnson, D.L. Indoor Air Quality (1999). In Engineering Reference Manual, 2nd Edition (Edited by Bolton, F. N. and D. L. Johnson). American Industrial Hygiene Association, Fairfax, VA, pp. 183-193.
Johnson, David and David Swift (1997). Sampling and Sizing Particles. In The Occupational Environment: Its Evaluation and Control (Edited by S. R. DiNardi). American Industrial Hygiene Association, Fairfax, VA, pp. 242-261.

Other Publications:

Johnson, D.L. and T.A. Pearce (1997). Industrial Hygiene Measurements Course Manual. Department of Occupational and Environmental Health, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma.
Johnson, D.L. and M. Polikandritou-Lambros (1995). Optimization of Therapeutic Liposomal Aerosols. Final Report to the Oklahoma Center for the Advancement of Science and Technology, Project HR3-089, June 30, 1995.
Bergman, T. and D. Johnson (1995). Risk on the Highway: Oklahoma County Flow Study, Energy and Transportation Network News, V(4): 6-7.
Boatright, D.T. and D.L. Johnson (1995). Math and Chemistry Manual. Department of Occupational and Environmental Health, University of Oklahoma Health Sciences Center.
Boatright, D.T., D.L. Johnson, A.K. Shaver, C.A. Brown, A.J. Edwards, and M. D. Parker (1994). Transportation Flow Study and Hazard Analysis for the Oklahoma County Local Emergency Planning Committee. University of Oklahoma Health Sciences Center, June 1994.
Johnson, D.L. (1994). The Role of Industrial Hygiene Practice in Prevention. OUtlook Alumni Newsletter, Spring, pp. 9-10.
Johnson, D.L. (1992). Environmental and Occupational Health Protection in the New World Order. OUtlook Alumni Newsletter, Spring, pp. 12-14.
Johnson, D.L. and T.B. Martonen (1986). Optimizing Performance of Centrifugal Aerosol Spectrometers for Aerodynamic Characterization of Fibers. In Aerosols: Formation and Reactivity, Proceedings of the Second International Aerosol Conference, West Berlin, 22-26 September 1986, Pergamon Press, Oxford.
Dinman, B.D., S.L. Friess, J.D. MacEwen, H.E. Stokinger, D.L. Johnson, and R.C. Wands (1981). Methodology for Developing Criteria and Standards for Protection of Military Personnel During Brief Exposures to Chemicals. Final Report to the U.S. Army Medical Research and Development Command, The MITRE Corporation, McLean, Virginia.

Published Abstracts:

McCutcheon, H., D.L. Johnson, N.A. Esmen, and R.E. Clinkenbeard (2003). Methodological Issues in Ultra Low Concentration Aerosol Sampling. Accepted for presentation at the American Industrial Hygiene Conference and Exhibition, Dallas, Texas, May 12-15, Abstract No. 161, pg. 38.
Phillips, M.L., N.A. Esmen, R. Lynch, D.L. Johnson, and T.A. Hall (2003). Determinants of Exposure to Volatile Organic Compounds in Ambient Air: The Oklahoma Urban Air Toxics Study. Accepted for presentation at the American Industrial Hygiene Conference and Exhibition, Dallas, Texas, May 12-15, Abstract No. 26, pg. 7.
Mead, K.R., D.L. Johnson, N.A. Esmen, and M.L. Phillips (2002). Reduced-Scale Water Modeling of a Freestanding Local Exhaust Hood. In: Proceedings of the 2002 American Industrial Hygiene Conference and Exhibition, San Diego, California, June 3-6, Abstract No. 101, pg. 25.
Johnson, D.L., L. Alston, and N.A. Esmen (2002). Dry Powder Aerosol Production Using Modified Pitt-3 Type Acoustic Generators. In: Proceedings of the 2002 American Industrial Hygiene Conference and Exhibition, San Diego, California, June 3-6, Abstract No. 158, pg. 39.
Marcham, C., D.L. Johnson, N.A. Esmen, R.E. Clinkenbeard, and R.A. Lynch (2002). 24-Hr Ambient and Residential Aerosol Characterization Using Automated Piezoelectric Cascade Impactors. In: Proceedings of the 2002 American Industrial Hygiene Conference and Exhibition, San Diego, California, June 3-6, Abstract No. 82, pg. 21.
Johnson, D.L. and N.A. Esmen (2002). Method Induced Misclassification for a Respirable Dust Sampled Using ISO/ACGIH/CEN Criteria. In: Proceedings of the Occupational Hygiene 2002, Sheffield, U.K., April 9-11.
Clinkenbeard, R., D. Johnson, R. Parthasarathy, C. Altan, K. Tan, R. Crawford, and S. Park (2001). Replication of Human Tracheobronchial Hollow Airway Models Using a Selective Laser Sintering Rapid Prototyping Technique. In: Proceedings of the 2001 American Industrial Hygiene Conference and Exhibition, New Orleans, Louisiana, June 2-7, Abstract No. 177, pg. 36.
Johnson, D.L., N.A. Esmen, and G.M. Agron (2001). The Variability of Delivered Dose of Aerosols with the Same Respirable Concentration but Different Size Distributions. In: Proceedings of the 2001 American Industrial Hygiene Conference and Exhibition, New Orleans, Louisiana, June 2-7, Abstract No. 46, pg. 10.
Hall, T., M. Phillips, A. Gibson, N. Esmen, D. Johnson, R. Lynch, and S. Moss (2001). Exposures to Ambient Volatile Organic Air Contaminants in a Lightly Industrialized City. In: Proceedings of the 2001 American Industrial Hygiene Conference and Exhibition, New Orleans, Louisiana, June 2-7, Abstract No. 251, pg. 51.
Phillips, M.L., N.A. Esmen, D.L. Johnson, T.A. Hall, R.A. Lynch, and A. Gibson (2001). Permeability of Single-Family Dwellings: Implications for Indoor Air Quality. In: Proceedings of the 2001 American Industrial Hygiene Conference and Exhibition, New Orleans, Lousiana, June 2-7, Abstract No. 190, pg. 39.
Esmen, N.A., T.A. Hall, D.L. Johnson, R.A. Lynch, M.L. Phillips, D. Wang, and R. Clinkenbeard (2000). PM10 and PM2.5 Correlation in Two Medium Size Metropolitan Areas. In: Proceedings of the 2000 American Industrial Hygiene Conference and Exhibition, Orlando, Florida, May 22-26, Abstract No. 14, pg. 4.
Tutt, R., M. Phillips, T. Hall, N. Esmen, and D. Johnson (2000). Evaluating Emissions from Outdoor Asbestos Abatement Activities in an Idled Petroleum Refinery. In: Proceedings of the 2000 American Industrial Hygiene Conference and Exhibition, Orlando, Florida, May 22-26, Abstract No. 83, pg. 17.
Johnson, D.L., T.A. Pearce, M.L. Phillips, and B. Hollander (2000). Biocidal Effectiveness of High Intensity Ultraviolet Irradiation in Metal Working Fluids. In: Proceedings of the 2000 American Industrial Hygiene Conference and Exhibition, Orlando, Florida, May 22-26, Abstract No. 199, pg. 41.
Sherwood, P., D.L. Johnson, T.A. Hall, and R.A. Lynch (2000). Evaluation of Worker Lead Exposures During Rotary Brush Cleaning of Fume Hood Ductwork in a Petroleum Research Laboratory. In: Proceedings of the 2000 American Industrial Hygiene Conference and Exhibition, Orlando, Florida, May 22-26, Abstract No. 116, pg. 24.
Meagher, C., M.L. Phillips, and D.L. Johnson (2000). Characterization of Aerosol Generated During Use of Powdered and "Powder-Free" Disposable Latex Gloves. In: Proceedings of the 2000 American Industrial Hygiene Conference and Exhibition, Orlando, Florida, May 22-26, Abstract No. 129, pg. 26.
Phillips, M.L., T.A. Hall, D.L. Johnson, N.A. Esmen, R. Clinkenbeard, and R.A. Lynch (2000). Use of Global Positioning System Technology to Track Subjects’ Location During Environmental Exposure Sampling. In: Proceedings of the 2000 American Industrial Hygiene Conference and Exhibition, Orlando, Florida, May 22-26, Abstract No. 148, pg. 31.
Johnson, D.L. and N.A. Esmen (1999). Simulation Analysis of Inhalable Dust Sampling Errors Using a Multi-component Error Model. In: Proceedings of the 1999 American Industrial Hygiene Conference and Exhibition, Toronto, Canada, June 5-11, Abstract No. 301, pg. 61.
Stone, R.C., T.A. Pearce, and D.L. Johnson (1999). The Effect of Nebulization Time and Pressure on the Culturability of Bacillus subtilis and Pseudomonas fluorescens Bacteria. In: Proceedings of the 1999 American Industrial Hygiene Conference and Exhibition, Toronto, Canada, June 5-11, Abstract No. 237, pg. 48.
Johnson, D.L. and T.A. Pearce (1998). Differences in Hygroscopic Growth Potential for Aerosolized Bacteria as a Function of Colony Age. In: Proceedings of the 17th Annual Conference of the American Association for Aerosol Research, Cincinnati, Ohio, June 22-26, Abstract No. 9B3, pg. 183.
Johnson, D.L., B.N. Thomas, R.C. Corcoran, C.M. Lindemann, P.J. Persichini, and C.L. Cotant (1998). Nebulization of Lipid Microtubules: Predicted and Observed Aerodynamic Behavior for Two Tubule Formulations. In: Proceedings of the 17th Annual Conference of the American Association for Aerosol Research, Cincinnati, Ohio, June 22-26, Abstract No. 10B1, pg. 201.
Johnson, D.L. and T.A. Pearce (1998). The Effect of Phosphate Buffer on Aerosol Size Distribution of Nebulized Gram-Positive and Gram-Negative Bioaerosols. In: Proceedings of the 1998 American Industrial Hygiene Conference and Exhibition, Atlanta, Georgia, May 9-15, Abstract No. 144, pg. 30
Pearce, T.A. and D.L. Johnson (1997). Hygroscopic Behavior of Gram-Positive and Gram-Negative Bacteria. In: Proceedings of the 16th Annual Conference of the American Association for Aerosol Research, Denver, Colorado, October 13-17, Abstract No. 10E3, pg. 326.
Johnson, D.L. and T.A. Pearce (1996). Variation in Bioaerosol Sampling Efficiency with Flowrate for a Denuder-Based Low Energy Sampler. In: Proceedings of the 15th Annual Conference of the American Association for Aerosol Research, Orlando, Florida, October 14-18, Abstract No. 13A2, pg. 434.
Bergman, T.A., D.L. Johnson, D.T. Boatright, K.G. Smallwood, and R.J. Rando (1996). Occupational Exposure of Nightclub Musicians to Environmental Tobacco Smoke. In: Proceedings of the 1996 American Industrial Hygiene Conference and Exposition, Washington, DC, May 18-24, Abstract No. 235, pg. 41.
Johnson, D.L. and T.A. Pearce (1995). Assessment of a Newly Developed Bioaerosol Sampler. In: Proceedings of the Fourteenth Annual Meeting of the American Association for Aerosol Research, Pittsburgh, PA, October 9-13, pg. 365.
Pearce, T. and D.L. Johnson (1994). Design and Evaluation of a Low-Energy Bioaerosol Sampler. In: Proceedings of the Fourth International Aerosols Conference, Los Angeles, CA, 29 August 29 - September 2, pg. 23.
Martonen, T.B. and D.L. Johnson (1989). Aerodynamic Size Characterization of Irregularly-shaped Particles and Implications to Lung Dosimetry. In: Proceedings of the 20th Annual Meeting of the Fine Particle Society.
Johnson, D.L. (1986). Aerodynamic Behavior of Non-Spherical, Orthotropic Aerosols Under Viscous Settling Conditions. Journal of Aerosol Science 17(3):426_430.

Martonen, T.B. and D.L. Johnson (1986). On the Motion of Particles in Centrifugal Aerosol Spectrometers: Theory and Experiment. Journal of Aerosol Science 17(3):495_498.
Johnson, D.L. and T.B. Martonen (1986). Optimizing Performance of Centrifugal Aerosol Spectrometers for Aerodynamic Characterization of Fibers. In: Aerosols: Formation and Reactivity, Proceedings of the Second International Aerosol Conference, West Berlin, 22-26 September 1986, Pergamon Press, Oxford.