@misc{indiciae6d82c4fc1a7a,
  title = {Kerogen in the Chattanooga shale},
  author = {Irving A. Breger and A. Brown},
  year = {1962},
  doi = {10.1126/science.137.3525.221},
  url = {https://pubs.usgs.gov/publication/70010492},
  note = {Source identifier: 70010492}
}