Krosko I G

Publications in Math-Net.Ru

1. Sufficient conditions for stability and instability in the sense of V. I. Zubov of invariant manifolds of differential systems
   
   Differ. Uravn., 9:8 (1973),  1527–1529
2. Detection of stability of periodic flows with the aid of generalized characteristic numbers
   
   Differ. Uravn., 7:9 (1971),  1701–1703