@misc{indiciae0552e3328251,
  title = {The Shamut coal deposit, north-central Armenia},
  author = {Brenda S. Pierce and Gourgen Malkhasian and Artur Martirosyan},
  year = {2000},
  doi = {10.3133/b2175},
  url = {https://pubs.usgs.gov/publication/b2175},
  note = {Source identifier: b2175}
}