@ARTICLE {NGOKO:2002, title = {Biological and physical contraints on maize production in the Humid Forest and Western Highlands of Cameroon}, author = {Ngoko, Z. and Cardwell, K. and Marasas, W. and Wingfield, M. and Ndemah, R. and Schulthess, F. }, journal = {European Journal of Plant Pathology}, year = {2002}, volume = {108}, number = {9}, pages = {893--902}, issn = {0929-1873}, }