@misc{indiciaef648f0dad1ec,
  title = {The structure of the Madill-Denison area, Oklahoma and Texas, with notes on oil and gas development},
  author = {O. B. Hopkins and Sidney Powers and H.M. Robinson},
  year = {1923},
  doi = {10.3133/b736a},
  url = {https://pubs.usgs.gov/publication/b736A},
  note = {Source identifier: b736A}
}