@misc{indiciae00c74a2dd254, title = {Guiding principles of USGS methodology for assessment of undiscovered conventional oil and gas resources}, author = {Ronald R. Charpentier and T. R. Klett}, year = {2005}, doi = {10.1007/s11053-005-8075-1}, url = {https://pubs.usgs.gov/publication/70028199}, note = {Source identifier: 70028199} }