1. Ayal, Y.: Geographical distribution, ecological niche and the strategy of reproduction of the colonizer Cerithium scabridum Phil. (Gastropoda: Prosobranchia) as compared with those of some other sympatric non-colonizing congeneric species, 210 pp. Unpublished Ph. D. dissertation, Hebrew University of Jerusalem 1978
2. Ayal, Y. and U. N. Safriel: Intertidal zonation and key-species associations of the flat rocky shores of Sinai, used for scaling environmental variables affecting cerithiid gastropods. Israel J. Zool. 29, 110?124 (1980)
3. Ayal, Y. and U. N. Safriel: Species composition, geographical distribution and habitat characteristics of rocky intertidal Cerithiidae (Gastropoda: Prosobranchia) along the Red Sea shores of Sinai. Israel J. Malac. (Argamon) 7, 53?72 (1981)
4. Bakus, G. J.: The feeding habits of fishes and primary production at Eniwetok, Marshall Islands. Micronesica 3, 135?149 (1967)
5. Butrus, G. A.: Fishes of the Red Sea. Oceanogr. mar. Biol. A. Rev. 9, 221?348 (1971)