@ARTICLE {DEFOER:1998, title = {Participatory action research and quantitative analysis for nutrient management in southern Mali: a fruitful marriage?}, author = {Defoer, T. and De Groote, H. and Hilhorst, T. and Kante, S. and Budelman, A. }, journal = {Agriculture, Ecosystems and Environment}, year = {1998}, volume = {71}, number = {1-3}, pages = {215--228}, issn = {0167-8809}, }