Kassam, Daud & T. Sato, K. Yamaoka. 2002. "Comparative morphometrics and associated growth trends of two benthophagous cichlid species from Lake Malawi (Pisces, Perciformes)". Zoologischer Anzeiger. 241(4):381–387. DOI: 10.1078/0044-5231-00082 (crc05245) (摘要)
Kassam, Daud & T. Sato, K. Yamaoka. 2002. "Landmark-based morphometric analysis of the body shape of two sympatric species, Ctenopharynx pictus and Otopharynx sp. “heterodon nankhumba” (Teleostei: Cichlidae), from Lake Malawi". Ichthyological Research. 49(4):340-345 (crc05244) (摘要)
Kassam, Daud & D.C. Adams, A.J.D. Ambali, K. Yamaoka. 2003. "Body shape variation in relation to resource partitioning within cichlid trophic guilds coexisting along the rocky shore of Lake Malawi". Animal Biology. 53(1):59-70. DOI: 10.1163/157075603769682585 (crc05248) (摘要)
Kassam, Daud & D.C. Adams, M. Hori, K. Yamaoka. 2003. "Morphometric analysis on ecomorphologically equivalent cichlid species from Lakes Malawi and Tanganyika". Journal of Zoology. 260(2):153-157. DOI: 10.1017/S0952836903003571 (crc03709) (摘要)
Kassam, Daud & D.C. Adams, K. Yamaoka. 2004. "Functional signi?ficance of variation in trophic morphology within feeding microhabitat-differentiated cichlid species in Lake Malawi". Animal Biology. 54(1):77-90 (crc05247) (摘要)
Kassam, Daud & D.C. Adams, K. Yamaoka. 2004. "Functional significance of variation in trophic morphology within feeding microhabitat-differentiated cichlid species in Lake Malawi". Animal Biology. 54(1):77-90. DOI: 10.1163/157075604323010060 (crc00875) (摘要)
Kassam, Daud & S. Mizoiri, K. Yamaoka. 2004. "Interspecific variation of body shape and sexual dimorphism in three coexisting species of the genus Petrotilapia (Teleostei: Cichlidae) from Lake Malawi". Ichthyological Research. 51(3):195-201. DOI: 10.1007/s10228-004-0215-9 (crc05246) (摘要)
Kassam, Daud & S. Seki, B. Rusuwa, A.J.D. Ambali, K. Yamaoka. 2005. "Genetic diversity within the genus Cynotilapia and its phylogenetic position among Lake Malawi's mbuna cichlids". African Journal of Biotechnology. 4(10):1195-1202. ISBN: 1684–5315 (crc03812) (摘要)
Kassam, Daud & S. Seki, M. Hori, K. Yamaoka. 2006. "Nuclear markers reveal that inter-lake cichlids' similar morphologies do not reflect similar genealogy". Molecular Phylogenetics and Evolution. 40(2):383-388. DOI: 10.1016/j.ympev.2006.03.002 (crc04132) (摘要)