Kochetkova Z M

Publications in Math-Net.Ru

1. The isochrony of a system of three differential equations in the presence of a family of nonperiodic solutions in the neighborhood of the origin
   
   Differ. Uravn., 7:12 (1971),  2279–2282
2. The isochrony of a certain system of differential equations
   
   Differ. Uravn., 7:2 (1971),  359–362