1. API Guidance Document HF1: Hydraulic Fracturing Operations-Well Construction and Integrity Guidelines. Washington DC;American Petroleum Institute,2009
2. A geochemical context for stray gas investigations in the northern Appalachian Basin: implications of analyses of natural gases from Neogene-through Devonian-age strata;Baldassare;AAPG Bull.,2014
3. Berg T, Edmunds W, Geyer A, Glover A, Hoskins D, MacLachlan D, Root S, Sevon W, Socolow A, & Miles C (1980) Geologic Map of Pennsylvania: Pennsylvania Geological Survey, 4th Series. (Map).
4. Drinking water while fracking: now and in the future;Brantley;Ground Water,2014
5. Water resource impacts during unconventional shale gas development: the Pennsylvania experience;Brantley;Int. J. Coal Geol.,2014