Lisnyak, A., and S. Torma. 2017. “Agroecological Research of PH Value in Acidic Soils at Liming Absence”. Visnyk of V. N. Karazin Kharkiv National University Series «Еcоlogy», no. 15 (January), 51-57. https://doi.org/10.26565/1992-4259-2016-15-07.