@ARTICLE {FRANKE:2004, title = {Incorporating short-season legumes and green manure crops into maize-based systems in the moist Guinea savanna of West Africa}, author = {Franke, A. and Schulz, S. and Oyewole, B. and Bako, S. }, journal = {Experimental Agriculture}, year = {2004}, volume = {40}, pages = {463--479}, }