Backman, Jan; Pestiaux, Pierre (1987): Pliocene Discoaster abundance variations, Deep Sea Drilling Project Site 606; biochronology and paleoenvironmental implications. Texas A & M University, Ocean Drilling Program, College Station, TX, United States, In: Ruddiman, William F., Kidd, Robert B., Baldauf, Jack G., Clement, Bradford M., Dolan, James F., Eggers, Margaret R., Hill, Philip R., Keigwin, Lloyd D., Jr., Mitchell, Margie, Philipps, Isabelle, Robinson, Frank, Salehipour, Sassan A., Takayama, Toshiaki, Thomas, Ellen, Unsold, Gerhard, Weaver, Philip P. E., Orlofsky, Susan (editor), Initial reports of the Deep Sea Drilling Project covering Leg 94 of the cruises of the drilling vessel Glomar Challenger, Norfolk, Virginia, to St. John's, Newfoundland, June-August 1983, 94 (1-2), 903-910, georefid:1987-027527