Elliott EM, Kendall C, Boyer EW, Burns DA, Lear G, Golden HE, Harlin, K, Bytnerowicz A, Butler TJ, Glatz R.  Dual nitrate isotopes in actively and passively collected dry deposition:  Utility for partitioning NO_x sources contributing to landscape nitrogen deposition.  Journal of Geophysical Research- Biogeosciences. 114, G04020, doi:10.1029/2008JG000889.

Burns DA, Boyer EW, Elliott EM, Kendall C.  2009.  Sources and Transformations of Nitrate from Streams Draining Varying Land Uses: Evidence from Dual Isotope Analysis.  Journal of Environmental Quality.  38-1149-1159.  

Goodale CL, Thomas SA, Fredriksen G, Elliott EM, Flinn KM, Butler TJ, Walter MT.  2009.  Unusual seasonal patterns and inferred processes of nitrogen retention in forested headwaters of the Upper Susquehanna River.  Biogeochemistry.  93:197-218. 

Golden, HE, Boyer, EW, Brown, MG, Elliott, EM, Lee DK.  2008.  Simple approaches for measuring dry atmospheric nitrogen deposition to watersheds.  Water Resources Research.  44:1-8.   W00D02. 

Nanus, L, Williams, MW, Campbell, DH, Elliott, EM, Kendall, C.  2008.  Evaluating regional patterns in nitrate sources to watersheds in National Parks of the Rocky Mountains using nitrate isotopes.  Environmental Science and Technology. 42:  6487-6493. 

Chang, CCY, McCormick PV, Newman S, Elliott, EM.  2008.  Isotopic indicators of environmental change in a subtropical wetland.  Ecological Indicators.  9(5):  825-836.

Elliott EM, Kendall C, Wankel SD, Burns DA, Boyer EW, Harlin K, Bain DJ, and Butler TJ.  2007.  Nitrogen isotopes as indicators of NOx source contributions to atmospheric nitrate deposition across the Midwestern and Northeastern United States.  Environmental Science & Technology.  41:7661-7667.

Accompanying USGS press release

Kendall, C, Elliott EM, and Wankel, SD.  2007.  Tracing Anthropogenic Inputs of Nitrogen to Ecosystems.  In Stable Isotopes in Ecology and Environmental Science (2nd edition).  Lajtha, K and Michener, RH (eds.)  Blackwell Scientific Publications.

Elliott, EM, Brush, GS.  2006.  Organic Nitrogen Isotopes Record Long-term Changes in Watershed Nitrogen Sources and Land Use.   Environmental Science and Technology. 40(9):  2910-2916.