@misc{indiciaef584419a13b9,
  title = {15N/14N variations in Cretaceous Atlantic sedimentary sequences: Implication for past changes in marine nitrogen biogeochemistry},
  author = {Greg H. Rau and M.A. Arthur and Walter E. Dean},
  year = {1987},
  doi = {10.1016/0012-821x(87)90201-9},
  url = {https://pubs.usgs.gov/publication/70210009},
  note = {Source identifier: 70210009}
}