@ARTICLE {GOERGEN:1992, title = {A cage experiment with four trophic levels: cassava plant growth as influenced by cassava mealybud, Phenacoccus manihoti, its parasitoid Epidinocarsis lopezi,and the hyperparasitoids Prochiloneurus insolitus and Chartocerus hyalipennis}, author = {Goergen, G. and Neuenschwander, P. }, journal = {Journal of Plant Diseases and Protection}, year = {1992}, volume = {99}, pages = {182--190}, note = {RTB; Root and Tuber; Cassava}, }