@misc{indiciaed8c91f5115df, title = {An initial resource assessment of the Upper Devonian Antrim Shale in the Michigan basin}, author = {G.L. Dolton and John C. Quinn}, year = {1996}, doi = {10.3133/ofr9575k}, url = {https://pubs.usgs.gov/publication/ofr9575K}, note = {Source identifier: ofr9575K} }