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Conner, T., L. Černikovský, J. Novák, AND R. Williams. Source apportionment with uncertainty estimates of fine particulate matter in Ostrava, Czech Republic using Positive Matrix Factorization. Atmospheric Pollution Research. Turkish National Committee for Air Pollution Research and Control, Izmir, Turkey, 7(3):503-512, (2016).

Breen, M., T. Long, B. Schultz, R. Williams, J. Richmond-Bryant, M. Breen, J. Langstaff, R. Devlin, A. Schneider, J. Burke, S. Batterman, AND Q. Meng. Air Pollution Exposure Model for Individuals (EMI) in Health Studies: Evaluation for Ambient PM2.5 in Central North Carolina. ENVIRONMENTAL SCIENCE & TECHNOLOGY. American Chemical Society, Washington, DC, 49(24):14184-14194, (2015).

Conner, T., L. Cernikovsky, J. Novak, H. Placha, B. Krejci, I. Nikolova, E. Chalupníckova, AND R. Williams. An investigation of local and regional sources of fine particulate matter in the Ostrava,the Czech Republic. Atmospheric Pollution Research. Turkish National Committee for Air Pollution Research and Control, Izmir, Turkey, 6(3):454-463, (2015).

Shin, H., Paul A. Jones, R. Brook, R. Bard, K. Oliver, AND R. Williams. Associations between Personal Exposures to VOCs and Alterations in Cardiovascular Physiology: Detroit Exposure and Aerosol Research Study (DEARS). ATMOSPHERIC ENVIRONMENT. Elsevier Science Ltd, New York, NY, 104:246-255, (2015).

Shin, H., Paul-A Jones, R. Brook, R. Bard, K. Oliver, AND R. Williams. Associations between personal exposures to VOCs and alterations in cardiovascular physiology: Detroit Exposure and Aerosol Research Study (DEARS) - presentation. 2015 ISEE, Sao Paulo, BRAZIL, August 30 - September 03, 2015.

Williams, R., A. Kaufman, AND S. Garvey. CAIRPOL CAIRCLIP NM-VOC. U.S. Environmental Protection Agency, Washington, DC, EPA/600/R-15/115 (NTIS PB2015-104894), 2015.

Williams, R., A. Kaufman, AND S. Garvey. CAIRPOL CAIRCLIP O3-NO2. U.S. Environmental Protection Agency, Washington, DC, EPA/600/R-15/117 (NTIS PB2015-105134), 2015.

WILLIAMS, R. W., T. M. BARZYK, AND A. KAUFMAN. Citizen Science Air Monitor (CSAM) Quality Assurance Guidelines. U.S. Environmental Protection Agency, Washington, DC, EPA/600/R-15/008, 2015.

Mukerjee, S., L. Smith, H. Brantley, C. Stallings, L. Neas, Sue Kimbrough, AND R. Williams. Comparison of modeled traffic exposure zones using on-road air pollution measurements. Atmospheric Pollution Research. Turkish National Committee for Air Pollution Research and Control, Izmir, Turkey, 6(1):82-87, (2015).

Williams, R., A. Kaufman, AND S. Garvey. DYLOS DC110. U.S. Environmental Protection Agency, Washington, DC, EPA/600/R-15/116 (NTIS PB2015-104895), 2015.

Williams, R. Emerging Low-Cost Sensors for Various Applications (Next Generation Air Monitoring). Federal Data Working Group, McLean , VA, McLean, VA, October 19, 2015.

Williams, R., A. Kaufman, T. Hanley, J. Rice, AND S. Garvey. Evaluation of Elm and Speck Sensors. U.S. Environmental Protection Agency, Washington, DC, EPA/600/R-15/314, 2015.

Kaufman, A., R. Williams, S. Hunt, R. French, H. Wilson, G. Hagler, Vasu Kilaru, P. Fine, S. Katz, G. Robarge, AND D. Renwick. Highlights from the Air Sensors 2014 Workshop. EM: AIR AND WASTE MANAGEMENT ASSOCIATION'S MAGAZINE FOR ENVIRONMENTAL MANAGERS. Air & Waste Management Association, Pittsburgh, PA, , 34-39, (2015).

Williams, R., A. Kaufman, AND S. Garvey. MET ONE 831. U.S. Environmental Protection Agency, Washington, DC, EPA/600/R-15/114 (NTIS PB2015-104893), 2015.

Williams, R., A. Kaufman, AND S. Garvey. Next Generation Air Monitoring (NGAM) VOC Sensor Evaluation Report. U.S. Environmental Protection Agency, Washington, DC, EPA/600/R-15/122 (NTIS PB2015-105133), 2015.

Williams, R., A. Kaufman, AND S. Garvey. PERKINELMER ELM. U.S. Environmental Protection Agency, Washington, DC, EPA/600/R-15/125 (NTIS PB2015-105136), 2015.

Thomas, K., J. Xue, R. Williams, P. Jones, AND D. Whitaker. Polychlorinated biphenyl sources, environmental levels, and exposures in school buildings. ISES 2015 Annual Meeting, Henderson, NV, October 18 - 22, 2015.

Conner, T., L. Cernikovsky, J. Novak, AND R. Williams. Source apportionment with uncertainty estimates of PM2.5 in Ostrava, Czech Republic using Positive Matrix Factorization. 2015 European Aerosol Conference, Milan, ITALY, September 10, 2015.

Williams, R., A. Kaufman, AND S. Garvey. TOXIRAE PRO PID. U.S. Environmental Protection Agency, Washington, DC, EPA/600/R-15/124 (NTIS PB2015-105135), 2015.

Kaufman, A., R. Williams, T. Barzyk, M. OShea, A. Hoang, P. Sheridan, AND M. Greenberg. The Air Sensor Citizen Science Toolbox: A Collaboration in Community Air Quality Monitoring and Mapping. Citizen Science 2015 Conference, San Jose, CA, February 11 - 12, 2015.

Williams, R., A. Kaufman, AND S. Garvey. UNITEC SENS-IT. U.S. Environmental Protection Agency, Washington, DC, EPA/600/R-15/119 (NTIS PB2015-105132), 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.

Williams, R., Vasu Kilaru, E. Snyder, A. Kaufman, T. Dye, A. Rutter, A. Russell, AND H. Hafner. Air Sensor Guidebook. U.S. Environmental Protection Agency, Washington, DC, EPA/600/R-14/159 (NTIS PB2015-100610), 2014.

Hammond, D., C. Croghan, H. Shin, R. Burnette, R. Bard, R. Brook, AND R. Williams. Cardiovascular impacts and micro-environmental exposure factors associated with continuous personal PM2.5 monitoring. Journal of Exposure Science and Environmental Epidemiology . Nature Publishing Group, London, Uk, 24(4):337-345, (2014).

Kaufman, A., R. Williams, T. Barzyk, AND Tim Watkins. Citizen Science and Emerging Technologies. Presented at US Public Health Service Scientific and Training Symposium, Raleigh, NC, June 10 - 12, 2014.