@misc{indiciaef6dec81a2d79,
  title = {Coalbed gas in Hungary; a preliminary report},
  author = {E.R. Landis and T.J. Rohrbacher and C.E. Barker and Bela Fodor and Gizella Gombar},
  year = {2002},
  doi = {10.3133/ofr01473},
  url = {https://pubs.usgs.gov/publication/ofr01473},
  note = {Source identifier: ofr01473}
}