Hamilton, Norman (1983): Cretaceous/Tertiary boundary studies at Deep Sea Drilling Project Site 516, Rio Grande Rise, South Atlantic; a synthesis. Texas A & M University, Ocean Drilling Program, College Station, TX, United States, In: Barker, Peter F., Johnson, David A., Carlson, Richard L., Cepek, Pavel, Coulbourn, William T., Gamboa, Luiz A., Hamilton, Norman, de Melo, Ubirajara, Pujol, Claude, Shor, Alexander N., Suzyumov, Alexey E., Tjalsma, Leonard R. C., Walton, William H., Whalen, Elizabeth (editor), Initial reports of the Deep Sea Drilling Project covering Leg 72 of the cruises of the drilling vessel Glomar Challenger, Santos, Brazil to Santos, Brazil, February-April, 1980, 72, 949-952, georefid:1984-034775