Testarmata, Margaret M. (1984): Paleomagnetic constraints on the age of Lower Cretaceous cores from Deep Sea Drilling Project Site 535, southeastern Gulf of Mexico. Texas A & M University, Ocean Drilling Program, College Station, TX, United States, In: Buffler, Richard T., Schlager, Wolfgang, Bowdler, Jay L., Cotillon, Pierre H., Halley, Robert B., Kinoshita, Hajimu, Magoon, Leslie B., III, McNulty, Charles L., Patton, James W., Premoli Silva, Isabella, Suarez, Otmara Avello, Testarmata, Margaret M., Tyson, Richard V., Watkins, David K., Pisciotto, Kenneth A. (editor), Initial reports of the Deep Sea Drilling Project, covering Leg 77 of the cruises of the drilling vessel Glomar Challenger; Ft. Lauderdale, Florida to San Juan, Puerto Rico, December 1980-February 1981, 77, 531-538, georefid:1985-028268