S. N. Tsarenko, “Torsional vibrations of a rod with an axial geometric inhomogeneity”, Vestn. Yuzhno-Ural. Gos. Un-ta. Ser. Matem. Mekh. Fiz., 11:1 (2019), 50–58
G. M. Ulitin, S. N. Tsarenko, “Method of averaging for the tasks on longitudinal impact of variable section rods”, Vestn. Yuzhno-Ural. Gos. Un-ta. Ser. Matem. Mekh. Fiz., 8:1 (2016), 43–48