Kurskoy, Y., Machekhin, Y. and Gnatenko, A.S. 2019. Topological methods in measurement and research of nonlinear dynamical systems. Journal of V. N. Karazin Kharkiv National University. Series Physics. 29 (Sep. 2019), 22-28. DOI:https://doi.org/10.26565/2222-5617-2018-29-04.