Blazenka Popovic, et al. “Factorial Analysis of Slaughter Characteristics of Fattening Pigs Fed Different additives–Enzyme and Probiotic in Mixtures”. African Journal of Pig Farming, vol. 6, no. 1, Nov. 2017, pp. 1-7, https://elixirpublishers.in/index.php/ajpf/article/view/721.