@article {131,
	title = {Evaluating a groundwater supply contamination incident attributed to Marcellus Shale gas development},
	journal = {Proceedings of the National Academy of Sciences of the United States of America},
	volume = {112},
	year = {2015},
	url = {http://www.pnas.org/content/112/20/6325.full},
	author = {Garth Llewellyn and Frank Dorman and J. L. Westland and David Yoxtheimer and Paul Grieve and Todd Sowers and E. Humston-Fulmer and Susan L. Brantley}
}
