1. Some Problems in the Theory of Nonlinear Oscillations;Malkin,1956
2. On a property of periodic solutions of quasi-linear autonomous systems with several degrees of freedom;Proskuriakov;PMM,1960
3. Periodic oscillations of quasi-linear autonomous systems with two degrees of freedom;Proskuriakov;PMM,1960
4. Construction of periodic solutions of quasi-linear autonomous systems with several degrees of freedom for particular cases;Proskuriakov;PMM,1963
5. On the construction of periodic solutions of quasi-linear autonomous systems with several degrees of freedom;Proskuriakov;PMM,1962