Boden, G., Teugels, G. G. & Hopkins, C. D. A systematic revision of the large-scaled Marcusenius with description of a new species from Cameroon (Teleostei; Osteoglossomorpha; Mormyridae). Journal of Natural History 31, 1645-1682 (1997).

Alves-Gomes, J. & Hopkins, C. D. Molecular insights into the phylogeny of mormyriform fishes and the evolution of their electric organs. Brain Behavior and Evolution 49, 324-351 (1997).