@misc{indiciae23b4a2d89cd7,
  title = {Elemental abundance anomalies in the late Cenomanian extinction interval: A search for the source(s)},
  author = {C. J. Orth and M. Attrep and L.R. Quintana and W.P. Elder and E.G. Kauffman and R. Diner and T. Villamil},
  year = {1993},
  doi = {10.1016/0012-821x(93)90126-t},
  url = {https://pubs.usgs.gov/publication/70018297},
  note = {Source identifier: 70018297}
}