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Bibliography

Reumer, J. W. F., and J.-D. Graf. 1986. Contribution to the phylogeny of Xenopus (Anura: Pipidae). Roček, Z. ed., Studies in Herpetology. Proceedings of the European Herpetological Meeting (3rd ordinary General Meeting of the Societas Europaea Herpetologica): 107–110. Prague, Charles University.