Yu, Wang, Li Dapeng, Shen Xiong, and Shi Zhengxiang. 2016. “Effects of Inductive Methods on Dunging Behavior of Weaning Pigs in Slatted Floor Pens”. International Journal of Agricultural and Biological Engineering 9 (4). Beijing, China:192-98. https://ijabe.org/index.php/ijabe/article/view/2560.