@ARTICLE {KANG:1991a, title = {Agroforestry in Africa's humid tropics: three success stories}, author = {Kang, B. T. and Versteeg, M. and Osiname, O. * and Gichuru, M. }, journal = {Agroforestry Today}, year = {1991}, volume = {3}, number = {2}, pages = {4--6}, issn = {1013-9591}, }