@ARTICLE {SIAW:1991, title = {Alley cropping with Leucaena leucocephala (Lam) de Wit and Acioa barteri (Hook F.) Engl.}, author = {Siaw, D. E. K. and Kang, B. and Okali, D. U. U. }, journal = {Agroforestry Systems}, year = {1991}, volume = {14}, pages = {219--231}, }