Ledbetter, Michael T. (1983): Magnetostratigraphy of middle-upper Miocene and upper middle Eocene sections in Hole 512. Texas A & M University, Ocean Drilling Program, College Station, TX, United States, In: Ludwig, William J., Krasheninnikov, Valery A., Basov, Ivan A., Bayer, Ulf, Bloemendal, Jan, Bornhold, Brian, Ciesielski, Paul F., Goldstein, Elaine H., Robert, Christian, Salloway, John C., Usher, John L., von der Dick, Hans, Weaver, Fred M., Wise, Sherwood W., Jr. (editor), Usher, John L. (editor), Blakeslee, Jan H. (editor), Lee, Marianna, Initial reports of the Deep Sea Drilling Project covering Leg 71 of the cruises of the drilling vessel Glomar Challenger; Valparaiso, Chile, to Santos, Brazil, January-February, 1980, 71, Part 2, 1093-1096, georefid:1984-009514