@ARTICLE {KOUTIKA:2004a, title = {Nutrient concentrations and NH4 - N mineralization under different soil types and fallow forms in southern Cameroon}, author = {Koutika, L. and Ndango, R. and Hauser, S. }, journal = {Journal of Plant Nutrition and Soil Science}, year = {2004}, volume = {167}, pages = {591--595}, }