@misc{indiciae6e8e1fcefe59,
  title = {Worldwide estimates of deep natural gas resources based on the U.S. Geological Survey World Petroleum Assessment 2000},
  author = {T. S. Dyman and R. A. Crovelli and C. E. Bartberger and K. I. Takahashi},
  year = {2002},
  doi = {10.1023/a:1019860722244},
  url = {https://pubs.usgs.gov/publication/70023990},
  note = {Source identifier: 70023990}
}