Kravchenko, N.B., Zelenskaya, E.I. and Lukienko, M.V. 2017. Environmental measures to optimize the functioning of the recreational zone. Man and Environment. Issues of Neoecology. 3-4(28) (Dec. 2017), 74-84. DOI:https://doi.org/10.26565/1992-4224-2017-28-08.