@misc{indiciae3fee6e1d02a6,
  title = {Automated semiquantitative direct-current-arc spectrographic analysis of eight argonne premium coal ash samples},
  author = {C.J. Skeen and B.J. Libby and W.B. Crandell},
  year = {2002},
  doi = {10.1021/ef00023a003},
  url = {https://pubs.usgs.gov/publication/70016078},
  note = {Source identifier: 70016078}
}