Duvall, R. DISCOVER-AQ and KORUS-AQ Missions: Low-Cost Sensor Evaluations. CASANZ Low Cost Sensor Workshop, Auckland, NEW ZEALAND, November 04, 2016.

Long, R., M. Beaver, R. Duvall, Jim Szykman, S. Kaushik, K. Kronmiller, M. Wheeler, S. Garvey, AND J. Crawford. Evaluation and Comparison of Methods for Measuring Ozone and NO2 Concentrations in Ambient Air during DISCOVER-AQ. EM Magazine. Air and Waste Management Association, Pittsburgh, PA, , 1-11, (2016).

Duvall, R., R. Long, M. Beaver, K. Kronmillwe, M. Wheeler, Jim Szykman, M. Silverman, AND J. Crawford. Performance Evaluation and Community Application of Low-Cost Sensors for Ozone and Nitrogen Dioxide. Sensors. MDPI, Basel, Switzerland, 16(10):1698, (2016).

Szykman, Jim, R. Long, R. Duvall, T. Knepp, M. Beaver, K. Cavender, R. Clarke, AND E. Olsen. The use of LIDAR Technology for Measuring Mixing Heights under the Photochemical Assessment Monitoring Program; leveraging research under the joint DISCOVER-AQ/FRAPPÉ Missions. EM: AIR AND WASTE MANAGEMENT ASSOCIATION'S MAGAZINE FOR ENVIRONMENTAL MANAGERS. Air & Waste Management Association, Pittsburgh, PA, , 1-7, (2016).

Norris, G., R. Duvall, S. Brown, AND S. Bai. EPA Positive Matrix Factorization (PMF) 5.0 Fundamentals and User Guide. U.S. Environmental Protection Agency, Washington, DC, EPA/600/R-14/108 (NTIS PB2015-105147), 2014.

Long, R., M. Beaver, R. Duvall, EricS Hall, S. Kaushik, K. Kronmiller, M. Wheeler, AND S. Garvey. Evaluation and Comparison of Chemiluminescence and UV Photometric Methods for Measuring Ozone Concentrations in Ambient Air. In Proceedings, 2015 (108th) A&WMA Annual Conference, Raleigh, NC, June 22 - 25, 2015. Air and Waste Management Association, Pittsburgh, PA, 546, (2015).

Williams, R., R. Long, M. Beaver, R. Duvall, G. Hagler, Sue Kimbrough, E. Thoma, Bill Mitchell, W. Jiao, A. Kaufman, J. Rice, T. Hanley, AND S. Garvey. Sensor Technology and Performance Characteristics. AWMA 2015 Meeting, Raleigh, NC, June 22, 2015.

Williams, R., D. Costa, A. Brown, A. Kaufman, D. Buchbinder, G. Hagler, E. Thoma, Bill Mitchell, B. Gullett, W. Jiao, Vasu Kilaru, R. Long, M. Beaver, R. Duvall, P. Solomon, K. Leovic, E. Smith, L. Stanek, Tim Watkins, P. Preuss, S. Katz, G. Robarge, E. Snyder, B. Sharpe, AND S. Garvey. #2) Sensor Technology-State of the Science. Webinar Presentation - Sensor Technology-State of the Science, Research Triangle Park, NC, July 08, 2014.

Beaver, M., R. Long, K. Kronmiller, R. Duvall, S. Kaushik, T. Morphy, AND P. King. Ambient intercomparison of direct and indirect methods for ambient nitrogen dioxide. National Ambient Monitoring Conference, Atlanta, GA, August 11 - 14, 2014.

Beaver, M., R. Long, Jim Szykman, R. Duvall, K. Baker, J. Kelly, A. Weinheimer, D. Knapp, D. Montzka, S. Pusede, AND R. Cohen. DISCOVER-AQ SJV Surface Measurements and Initial Comparisons with Photochemical Model Simulations. CMAS Conference, Chapel Hill, NC, October 27 - 29, 2014.

Duvall, R., R. Long, M. Beaver, EricS Hall, J. Szykman, AND S. Kaushik. Evaluation of small sensor technology for criteria air pollutants at ground-based sites and a citizen science network. National Ambient Air Monitoring Conference, Atlanta, GA, August 11 - 14, 2014.

Hall, E., S. Kaushik, R. Vanderpool, R. Duvall, M. Beaver, R. Long, AND P. Solomon. Integrating Sensor Monitoring Technology into the Current Air Pollution Regulatory Support Paradigm: Practical Considerations. American Journal of Environmental Engineering. Scientific & Academic Publishing, Rosemead, CA, 4(6):147-154, (2014).

Williams, R., R. Long, M. Beaver, R. Duvall, Sue Kimbrough, E. Thoma, Bill Mitchell, J. Rice, T. Hanley, AND S. Garvey. Observations from Laboratory and Field-based Evaluations of Select Low Cost Sensor Performance. 2014 International Society of Exposure Science, Cincinnati, OH, October 12 - 16, 2014.

Long, R., E. Hall, M. Beaver, R. Duvall, S. Kaushik, K. Kronmiller, M. Wheeler, S. Garvey, Z. Drake, AND F. McElroy. Performance of the Proposed New Federal Reference Methods for Measuring Ozone Concentrations in Ambient Air. U.S. Environmental Protection Agency, Washington, DC, EPA/600/R-14/432 (NTIS PB2015-101240), 2014.

Long, R., M. Beaver, R. Duvall, EricS Hall, AND S. Kaushik. Review of Federal Reference Method for Ozone: Nitric Oxide-Chemiluminescence. CASAC AMMS Teleconference on Federal Reference Method for Ozone: Nitric Oxide-Chemiluminescene, Research Triangle Park, NC, April 03, 2014.

Long, R., M. Beaver, R. Duvall, EricS Hall, AND S. Kaushik. Review of Federal Reference Method for Ozone: Nitric Oxide-Chemiluminescence:Supplemental Material for CASAC AMMS. CASAC AMMS Teleconference on Federal Reference Method for Ozone, Washington, DC, June 12, 2014.

Beaver, M., K. Kronmiller, R. Duvall, S. Kaushik, T. Morphy, P. King, AND R. Long. Direct and Indirect Methods for the Measurement of Ambient Nitrogen Dioxide. Presented at AWMA Measurement Technologies meeting, Sacramento, CA, November 19 - 21, 2013.

Beaver, M., K. Kronmiller, R. Duvall, S. Kaushik, T. Morphy, P. King, AND R. Long. Direct and Indirect Methods for the Measurement of Nitrogen Dioxide (NO2). Presented at AWMA Measurements Meeting, Sacramento, CA, November 20, 2013.

Baxter, L., R. Duvall, AND J. Sacks. Examining the effects of air pollution composition on within region differences in PM2.5 mortality risk estimates. Journal of Exposure Science and Environmental Epidemiology . Nature Publishing Group, London, Uk, 23:457-465, (2013).