Every reference with a DOI in the deposited reference list resolved to a known
work in Crossref or DataCite at the dated check, and none carried a retraction,
withdrawal, or removal notice.
The 20 references without a DOI — listed, not checked
no DOI — not checkedFutuyma, D. J., Evolutionary Biology. Sinauer, Sunderland 1979.
no DOI — not checkedFryer, G., and Iles, T. D., The Cichlid Fishes of the Great Lakes of Africa. T. F. H. Publications, Neptune City 1972.
no DOI — not checkedEchelle, A. A., and Kornfield, I., Evolution of Fish Species Flocks. Univ. Maine Press, Orono 1984.
no DOI — not checkedPoll, M., Result. scient. Explor. hydrobiol. lac Tanganika (1946–47)3 (5b) (1956) 1.
no DOI — not checkedGreenwood, P. H., in: Evolution of Fish Species Flocks, pp. 141–154. Eds A. A. Echelle and I. Kornfield. Univ. Maine Press, Orono 1984.
no DOI — not checkedPoll, M., Classification des Cichlidae du lac Tanganika Tribus, Genres et Especes. Academie Royale de Belgique, Bruxelles 1986.
no DOI — not checkedFerguson, A., Biochemical Systematics and Evolution. Blackie, Glasgow 1980.
no DOI — not checkedRichardson, B. J., Baverstock, P. R., and Adams, M., Allozyme Electrophoresis: A Handbook for Animal Systematics and Population Structure. Academic Press, Sydney 1986.
no DOI — not checkedSelander, R. K., Smith, M. H., Yang, S. Y., Johnson, W. E., and Gentry, J. B., Stud. Genet., Univ. Texas Publ.7103 (1971) 49.
no DOI — not checkedHarris, H., and Hopkinson, D. A., Handbook of Enzyme Electrophoresis in Human Genetics. North-Holland, Amsterdam 1976.
no DOI — not checkedRogers, J. S., Stud. Genet., Univ. Texas Publ.7213 (1972) 145.
no DOI — not checkedSneath, P. H. A., and Sokal, R. R., Numerical Taxonomy. Freeman, San Francisco 1973.
no DOI — not checkedNei, M., Molecular Population Genetics and Evolution. North-Holland, Amsterdam 1975.
no DOI — not checkedSaitou, N., and Nei, M., Molec. Biol. Evol.4 (1987) 406.
no DOI — not checkedSwofford, D. L., PAUP: Phylogenetic Analysis Using Parsimony, Version 2.4. Illinois natl Hist. Surv., Champaign 1985.
no DOI — not checkedStiassny, M., in: Cichlid Fishes: Behavior, Ecology and Evolution. Ed. M. H. A. Keenleyside. Croom Helm, London (1991) in press.
no DOI — not checkedSage, R. D., Loiselle, P. V., Basasibwaki, P., and Wilson, A. C., in: Evolution of Fish Species Flocks, pp. 185–201. Eds A. A. Echelle and I. Kornfield. Univ. Maine Press, Orono 1984.
no DOI — not checkedLiem, M. F., Bull. Mus. Comp. Zool.149 (1981) 191.
no DOI — not checkedGreenwood, P. H., Bull. Br. Mus. Nat. Hist. (Zool.)44 (1983) 249.
no DOI — not checkedKornfield, I., McKaye, K. R., and Kocher, T., Isozyme Bull.18 (1985) 76.
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