@misc{indiciaedf2e0dc385fc,
  title = {Geochemical characteristics of Holocene laminated sapropel (unit II) and underlying lacustrine unit III in the Black Sea},
  author = {Walter E. Dean and Michael A. Arthur},
  year = {2011},
  doi = {10.3133/ofr20101323},
  url = {https://pubs.usgs.gov/publication/ofr20101323},
  note = {Source identifier: ofr20101323}
}