@INPROCEEDINGS {NEUENSCHWANDER:2007, title = {Biological control and functional biodiversity in agricultural production: successful cases to improve food security in Africa}, author = {Neuenschwander, P. and Hanna, R. }, booktitle = {Proceeding of the Symposium on Organic Agriculture in Development: the need for integrated production for food security}, year = {2007}, pages = {19--24}, }