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 15 references without a DOI — listed, not checked
no DOI — not checkedFryer, G. & Iles, T. D. The Cichlid Fishes of the Great Lakes of Africa. Their Biology and Evolution(Oliver & Boyd, Edinburgh, 1972).
no DOI — not checkedSage, R. D., Loiselle, P. V., Basasibwaki, P. & Wilson, A. C. in Evolution of Fish Species Flocks (eds Echelle, A. A. & Kornfield, I.) 185–201 (University of Maine Press, Orono, 1984).
no DOI — not checkedGreenwood, P. H. Bull. Br. Mus. nat. Hist. (Zool.) 44, 249–290 (1983).
no DOI — not checkedGreenwood, P. H. Bull. Br. Mus. nat. Hist. (Zool.) 45, 209–231 (1983).
no DOI — not checkedGreenwood, P. H. Bull. Br. Mus. nat. Hist. {Zool.) 3, 295–333 (1956).
no DOI — not checkedNei, M. & Roychoudhury, A. K. Evol. Biol. 14, 1–59 (1982).
no DOI — not checkedMeyer, A. Evolution 41, 1357–1369 (1987).
no DOI — not checkedAvise, J. C., Bermingham, E., Kessler, L. G. & Saunders, N. C. Evolution 38, 931–941 (1984).
no DOI — not checkedEccles, D. H. & Trewavas, E. Malawian Cichlid Fishes. The Classification of Some Haplochromme Genera (A. W. Diekhoff Lake Fish Movies, Herten, 1989).
no DOI — not checkedGreenwood, P. H. Bull. Br. Mus. nat. Hist. (Zool.) 35, 265–322 (1979).
no DOI — not checkedGreenwood, P. H. Bull. Br. Mus. nat. Hist. (Zool.) 39, 1–101 (1980).
no DOI — not checkedRibbink, A. J., Marsh, B. A., Marsh, A. C., Ribbink, A. C. & Sharp, B. J. S. Afr. J. Zool. 18, 149–310 (1983).
no DOI — not checkedSwofford, D. L. PAUP: Phylogenetic Analysis Using Parsimony, Version 3 (Illinois Natural History Survey, Champaign, Illinois, 1989).
no DOI — not checkedKornfield, I. L., McKaye, K. & Kocher, T. Isozyme Bull. 18, 76 1985.
no DOI — not checkedIrwin, D. M., Kocher, T. D. & Wilson, A. C. J. molec. Evol. (in the press).
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