1. A.M. Lyapunov's Methods and their Applications;Zubov,1957
2. The Stability of Motion;Zubov,1973
3. The direct Lyapunov method in problems of stability for elastic systems;Movchan;Prikl Mat Mekh,1959
4. The stability of processes with respect to two metrics;Movchan;Prikl Mat Mekh,1960
5. The stability of motion of continuous bodies. Lagrange's theorem and its inversion;Movchan;Inzh Sbornik,1960