1. The loxodromic pendulum of Hess;Zhukovskii,1948
2. The moving angular velocity hodograph in Hess' solution of the problem of motion of a body with a fixed point;Kovalev;PMM,1968
3. Motion of a body in the Hess' case;Kovalev,1969
4. On the equations of motion of a gyrostat;Kharlamov,1964