1. Avtokolebanija Mehanicheskih Sistem;Tondl,1979
2. Izgibnije kolebanija vrashchajushchihsja valov;Dimentberg,1959
3. On Rotor Dynamics;Muszynska,1988
4. Rotor Dynamics of Turbomachinery;Vance,1988
5. Extensions of Melnikov criterion for the differential equation with complex function;Cveticanin;Nonlinear Dyn.,1993