@ARTICLE {ZEDDIES J.:2001, title = {Economics of biological control of cassava mealybug in Africa}, author = {Zeddies, J. and Schaab, R. P. and Neuenschwander, P. and Herren, H. R. }, journal = {Agricultural Economics}, year = {2001}, volume = {24}, number = {2}, pages = {209--219}, issn = {0169-5150}, note = {RTB; Root and Tuber; Cassava}, }