Zaitsev A I

Publications in Math-Net.Ru

1. Quasiperiodic solutions of nonlinear systems of differential equations containing a small parameter
   
   Differ. Uravn., 3:7 (1967),  1100–1112
2. Analytic form of solutions of linear systems of differential equations with quasi-periodic coefficients
   
   Differ. Uravn., 3:2 (1967),  219–225