@misc{indiciaeeb13bea764ca,
  title = {Geostatistical modeling of the gas emission zone and its in-place gas content for Pittsburgh-seam mines using sequential Gaussian simulation},
  author = {Cevat O. Karacan and Ricardo A. Olea and G. Goodman},
  year = {2012},
  doi = {10.1016/j.coal.2011.10.010},
  url = {https://pubs.usgs.gov/publication/70032250},
  note = {Source identifier: 70032250}
}