KASSAM, D., MIZOIRI, S. and YAMAOKA, K.: Inferspesific variation of body shape and sexual dimorphism in three coexisting species of the genus petrotilapia from Lake Malawi. Ichthyological Research. 2004. 51. 195-201
KASSAM, D., ADAMS, D. C. and YAMAOKA, K.: Functional significance of variation in trophic morphology with in feeding microhabitat-differentiated cichlid species in Lake Malawi. Animal Biology. 2004. 54(1), 77-90
KASSAM, D. D. , ADAMS, D. , AMBALI, A. J. D. , and YAMAOKA, K. : Body shape variation in relation to resource partitioning within cichild trophic guilds coexisting along the rocky shore of Lake Malawi. Animal Biology. 2003. 53. 1. 59-70