- M. V. Shamolin, “Low-Dimensional and Multi-Dimensional Pendulums in Nonconservative Fields. Part 2”, J Math Sci, 233, № 3, 2018, 301
- M. V. Shamolin, “Integrable Variable Dissipation Systems on the Tangent Bundle of a Multi-Dimensional Sphere and Some Applications”, J Math Sci, 230, № 2, 2018, 185
- M. V. Shamolin, “Low-Dimensional and Multi-Dimensional Pendulums in Nonconservative Fields. Part 1”, J Math Sci, 233, № 2, 2018, 173