Gaswirth, Stephanie B. sgaswirth@usgs.gov,Marra, Kristen R. kmarra@usgs.gov,Lillis, Paul G. plillis@usgs.gov,et al. Assessment of undiscovered continuous oil resources in the Wolfcamp shale of the Midland Basin, Permian Basin Province, Texas, 2016:U.S. Geological Survey,2016.