ЛАВРИК, О. Д.; МАКСЮТОВ, А. О.; ЦИМБАЛЮК, В. В. Asymmetry and symmetry of valley-river of landscape and technical systems. Visnyk of V. N. Karazin Kharkiv National University, series "Geology. Geography. Ecology", n. 49, p. 125-136, 20 Mar. 2019.