Arendarenko, V. M. .; Antonets, A. V. .; Savchenko, N. K. .; Samoilenko, T. V. .; Ivanov, O. M. . CALCULATION MODEL OF GRAIN GRAVITATION MOVEMENT IN SLOPING PASSAGE WITH DISCRETE VARIABLE INCLINATION ANGLE. Scient.Prog.&Innov. 2020, 273-282.