An investigation of the Rajidae of the west and south coasts of southern Africa. Annals of the South African Museum, 55(4), 151–220
The origin, interrelationships and distribution of southern african Rajidae (Chondrichthyes, Batoidei). Annals of the South African Museum, 60(1), 1–103
Fischtypen in der Sammlung des Institutes für Seefischerei, Hamburg. Mitteilungen aus dem Institut für Seefischerei Hamburg, 25, 1–20
Families Rajidae, Anacanthobatidae In Smith's Sea Fishes, by M.M. Smith & P.C. Heemstra, eds. Macmillian, Johannesburg: 115–128
A preliminary investigation of the feeding ecology of skates (Batoidea: Rajidae) off the west coast of southern Africa. South African Journal of Marine Science, 10(1), 71–81
DOI: 10.2989/02577619109504621
The Zoological Museum Hamburg (ZMH) fish collection as a global biodiversity archive for elasmobranchs and actinopterygians as well as other fish taxa. Journal of Applied Ichthyology, 25(S1), 9–32
DOI: 10.1111/j.1439-0426.2009.01296.x