Cann, J. R.; Hsue, Kenneth J. (1973): Petrology and geochemistry of the Valencia Trough volcanic rocks; trace elements in the Valencia Trough volcanic rocks. Texas A & M University, Ocean Drilling Program, College Station, TX, United States, In: 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. (editor), 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, 13, Part 2, 772-773, georefid:1983-030118