Using system dynamics for ex-ante impact assessment of food safety policies in pig value chains - Rich, Karl M.; Nguyen Thi Thu Huyen; Duong Nam Ha; Nguyen Thi Duong Nga; Vu Khac Xuan; Ninh Xuan Trung; Tran Van Long; Pham Van Hung; Unger, Fred; Hamza, K.; Lapar, Ma. Lucila (University of New England, 2015)