Піскун, В. І., and Н. В. Піскун. “Resource Saving Wastes Disposal by Pork Production on the Industrial Basis”. Visnyk of V. N. Karazin Kharkiv National University. Series Еcоlogy, no. 893, 1, pp. 96-100, https://periodicals.karazin.ua/ecology/article/view/852.