1. The tools for wreck excavation;Ball;Triton,1973
2. Ancient wrecks and the archaeology of ships;Basch;Int. J. Naut. Archaeol.,1972
3. Ancient wrecks and the archaeology of ships. A comment;Christensen;Int. J. Naut. Archaeol.
4. First season of excavation on the Punic wreck in Sicily;Frost;Int. J. Naut. Archaeol.,1973
5. Frost, H. , 1973b, The Punic wreck off Marsala, Sicily. Science Diving International. Proceedings of 3rd Scientific Symposium. CMAS 3rd World Congress. N. C.Flemming (Ed.), London, 1973: 19-28.