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