V. Margeta, G. Kralik, D. Hanzek, and P. Margeta, “Deep-litter pig keeping: A review”, AAK, vol. 14, no. 2, pp. 209–213, Oct. 2010, Accessed: Jan. 31, 2026. [Online]. Available: https://journal.uni-mate.hu/index.php/aak/article/view/2003