Tsocheva-Gaytandzhieva, Neli, et al. “Effect of Experimental Fasciolosis and Diethylnitrosamine Intoxication on Trace Elements Content in Rat Liver”. TRADITION AND MODERNITY IN VETERINARY MEDICINE, vol. 1, no. 1, July 2016, pp. 73-77, https://www.scij-tmvm.com/index.php/pub/article/view/3.