Eschmeyer's Catalog of Fishes Reference Record:
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Ball, R. E., B. Serra-Pereira, J. Ellis, M. J. Genner, S. Iglésias, A. F. Johnson, C. S. Jones, R. Leslie, J. Lewis, S. Mariani, G. Menezes, F. Neat, L. R. Noble, D. W. Sims and A. M. Griffiths 2016 (June) [ref. 36106] Download ref.

- Resolving taxonomic uncertainty in vulnerable elsamobranchs: are the Madeira skate (Raja maderensis) and the thornback ray (Raja clavata) distinct species?. Conservation Genetics v. 17 (no. 3): 565-576. [Correction appeared online, 23 Aug. 2018, in Conservation Genetics:1 p.]