Energy exchange in M-crowdion clusters in 2D Morse latticeIgor A. Shepelev, Dmitry V. Bachurin, Elena A. Korznikova and Sergey V. DmitrievEur. Phys. J. B, 93 9 (2020) 167DOI: https://doi.org/10.1140/epjb/e2020-10160-0