Vyacheslavovich Korsakov, Konstantin, et al. “Efficiency of Using the Reasil Humic Vet Feed Additive in Broiler Chicken Farming”. International Journal of Engineering and Technology, vol. 7, no. 4.38, Dec. 2018, pp. 281-3, https://doi.org/10.14419/ijet.v7i4.38.24484.