@ARTICLE {NGOBO:2004b, title = {Impact of fallow and invasion by Chromolaena odorata on weed communities of crop fields in Cameroon.}, author = {Ngobo, M. and McDonald, M. and Weise, S. }, journal = {Ecology and Society}, year = {2004}, volume = {2}, number = {9}, pages = {1--15}, }