@misc{indiciaec6a74556caca,
  title = {Petroleum geology and resources of the Dnieper-Donets Basin, Ukraine and Russia},
  author = {Gregory F. Ulmishek},
  year = {2001},
  doi = {10.3133/b2201e},
  url = {https://pubs.usgs.gov/publication/b2201E},
  note = {Source identifier: b2201E}
}