J. J. M.  van der Merwe, van Wyk, A. E., and Kok, P. D. F., ?Dahlgrenodendron, a remarkable new genus of Lauraceae from Natal and Pondoland?, South African Journal of Botany, vol. 54, pp. 80-88, 1988.

J. J. M.  van der Merwe, van Wyk, A. E., and Kok, P. D. F., ?Pollen types in the Lauraceae?, Grana, vol. 29, pp. 185-196, 1990.