2 citations to https://www.mathnet.ru/rus/mecca1

1. Ivan Polekhin, “First steps towards the averaging with respect to a part of the coordinates”, Theor appl mech (Belgr), 52:1 (2025), 115  
2. Mikhail V. Belichenko, Olga V. Kholostova, “On Pendulum-Type Motions and Permanent Rotations in an Approximate Problem of the Dynamics of a Rigid Body with a Vibrating Suspension”, Regul. Chaot. Dyn., 30:5 (2025), 847