@misc{indiciae893577c4eb91,
  title = {Germaniferous lignite from the District of Columbia and vicinity},
  author = {T. Stadnichenko and K. J. Murata and J. M. Axelrod},
  year = {1950},
  doi = {10.1126/science.112.2900.109.a},
  url = {https://pubs.usgs.gov/publication/70011174},
  note = {Source identifier: 70011174}
}