Budde, C.; Klump, G. 2003. Vocal repertoire of the black rhino Diceros bicornis ssp. And possibilities of individual identification. Mammalian Biology 68 (1): 42-47, figs. 1-2, tables 1-3.
Budde, C.; Klump, G. 2002. Vocal communication in the black rhino (Diceros bicornis ssp.) and possibilities of individual communication.
Budde, C.; Klump, G. 2001. Vocal communication of the black rhino (Diceros bicornis ssp.).






