M. SYSYN, U. GERBER, V. KOVALCHUK, and O. NABOCHENKO, “The complex phenomenological model for prediction of inhomogeneous deformations of railway ballast layer after tamping works”, AoT, vol. 47, no. 3, pp. 91–107, Sep. 2018, doi: 10.5604/01.3001.0012.6512.