Truchan, M.; Aitken, T. (1973): Site surveys (drill sites 155 and 158) on the Coiba and Cocos ridges in the Panama Basin. 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), 473-495, georefid:1976-016539