Mullen, Nasim A., Jina Li, Marion L. Russell, Michael Spears, Brennan Less, and Brett C. Singer."Results of the California Healthy Homes Indoor Air Quality Study of 2011-2013: Impact of Natural Gas Appliances on Air Pollutant Concentrations."Indoor Air (2015). DOI
Maddalena, Randy L., Na Li, Alfred T. Hodgson, Francis J. Offermann, and Brett C. Singer."Maximizing Information from Residential Measurements of Volatile Organic Compounds."Healthy Buildings 2012 - 10th International Conference (2013).