@misc{indiciaeecd9eb190f9f,
  title = {Borehole and thin section descriptions from exploration drilling and field work in the Antaramut-Kurtan-Dzoragukh Coal Field, North-Central Armenia},
  author = {B.S. Pierce and Samvel Harutunian and Artur Martirosyan and Grigory Harutunian},
  year = {1999},
  doi = {10.3133/ofr99582},
  url = {https://pubs.usgs.gov/publication/ofr99582},
  note = {Source identifier: ofr99582}
}