Gartner, S., Jr. (1973): Nannofossil age determinations, DSDP Leg 16. Texas A & M University, Ocean Drilling Program, College Station, TX, United States, Initial Reports of the Deep Sea Drilling Project, 16 (San Cristobal, Panama, to Honolulu, Hawaii; Feb.-March 1971), 883-889, georefid:1976-016559