3 citations to https://www.mathnet.ru/eng/tm4112

1. I. Yu. Polekhin, “Remarks on Forced Oscillations on Manifolds”, Proc. Steklov Inst. Math., 327 (2024), 268–275        
2. I. Yu. Polekhin, “The existence proof for forced oscillations by adding dissipative forces in the example of a spherical pendulum”, Theoret. and Math. Phys., 211:2 (2022), 692–700          
3. I. P. Popov, “Varieties of mechanical powers”, J. Mach. Manuf. Reliab., 51:8 (2022), 746