Szőke, Szilvia, Lajos Nagy, Sándor Kovács, and Péter Balogh. “Examination of Pig Farm Technology by Computer Simulation”. Applied Studies in Agribusiness and Commerce 3, no. 5-6 (December 30, 2009): 25-29. Accessed September 20, 2020. https://ojs.lib.unideb.hu/apstract/article/view/7547.