1. Dynamics of a system in the PainlevéKlein example: on the Painlevé paradox;Fufayev;Izv. Akad. Nauk SSSR. MTT,1991
2. More on the Painlevé paradoxes;Neimark;Izv. Ross. Akad. Nauk. MTT,1995
3. Notes on Mechanics. Some Problems, Phenomena and Paradoxes;Samsonov,1980
4. Consideration of “degenerate” dynamical systems using the “jump” hypothesis;Butenin;Prikl. Mat. Mekh.,1948