Музиченко, О. С., and З. В. Лавринюк. “Environmental Status And Use of Recreational Resources Lakes Velymche and Somyne Volyn Region”. Visnyk of V. N. Karazin Kharkiv National University Series «Еcоlogy», no. 15, Jan. 2017, pp. 67-74, doi:10.26565/1992-4259-2016-15-09.