@misc{indiciae783c1d7fff81, title = {Assessment of in-place oil shale resources of the Green River Formation, Piceance Basin, western Colorado}, author = {Ronald C. Johnson and Tracey J. Mercier and Michael E. Brownfield and Michael P. Pantea and Jesse G. Self}, year = {2009}, doi = {10.3133/fs20093012}, url = {https://pubs.usgs.gov/publication/fs20093012}, note = {Source identifier: fs20093012} }