@misc{indiciaed6d05c60c1b4,
  title = {Statistics of petroleum exploration in the world outside the United States and Canada through 2001},
  author = {Emil D. Attanasi and Philip A. Freeman and Jennifer A. Glovier},
  year = {2007},
  doi = {10.3133/cir1288},
  url = {https://pubs.usgs.gov/publication/cir1288},
  note = {Source identifier: cir1288}
}