@INBOOK {SINGH:2002b, title = {Breeding cowpea varieties for resistance to Striga gesnerioides and Alectra vogelii}, author = {Singh, B. }, year = {2002}, type = {Challenges and opportunities for enhancing sustainable cowpea production:}, pages = {154--163}, note = {Proceedings of the World Cowpea Conference III held at the International Institute of Tropical Agriculture (IITA), Ibadan, Nigeria, 4-8 September 2000}, }