O. Nabochenko, M. Sysyn, V. Kovalchuk, Y. Kovalchuk, A. Pentsak, and S. Braichenko, “Studying the railroad track geometry deterioration as a result of an uneven subsidence of the ballast layer”, EEJET, vol. 1, no. 7 (97), pp. 50–59, Jan. 2019.