Mignouna, H. D., M. M. Abang, and R. Asiedu. “Harnessing Modern Biotechnology for Tropical Tuber Crop Improvement: Yam (<i>Dioscorea</i> Spp.) Molecular Breeding”. African Journal of Biotechnology, vol. 2, no. 12, Feb. 2004, pp. 478-85, doi:10.5897/ajb2003.000-1097.