@INPROCEEDINGS {HAUSER:2006b, title = {Farmers' perception and use of planted Calliandra calothyrsus fallow in southern Cameroon}, author = {Hauser, S. and Njayou, M. and Zapfack, L. *}, booktitle = {TROPENTAG 2006, 11-13 October, Bonn, Germany}, year = {2006}, }