Ryan, William B. F.; Hsue, Kenneth J.; Cita, Maria B.; Dumitrica, Paulian; Lort, Jennifer M.; Maync, Wolf; Nesteroff, Wladimir D.; Pautot, Guy; Stradner, Herbert; Wezel, Forese C.; Kaneps, Ansis G. (ed.) (1973): Initial reports of the Deep Sea Drilling Project; covering Leg 13 of the cruises of the Drilling Vessel Glomar Challenger, Lisbon, Portugal to Lisbon, Portugal, August-October 1970. Texas A & M University, Ocean Drilling Program, College Station, TX, United States, Initial Reports of the Deep Sea Drilling Project, 13, Part 1, 514 pp., georefid:1983-028137