Introductory Note published 30 December 2022 2022, Vol. 18, no. 5, pp. 753-753 Citation: Introductory Note, Rus. J. Nonlin. Dyn., 2022, Vol. 18, no. 5, pp. 753-753 Download File PDF, 38.36 Kb This work is licensed under a Creative Commons Attribution-NoDerivs 3.0 Unported License