In memory of Alexander V. Karapetyan 2021, Vol. 17, no. 2, pp. 243-244 Citation: In memory of Alexander V. Karapetyan, Rus. J. Nonlin. Dyn., 2021, Vol. 17, no. 2, pp. 243-244 DOI:10.20537/nd210208 Download File PDF, 4.36 Mb This work is licensed under a Creative Commons Attribution-NoDerivs 3.0 Unported License