Rodygin L V

Publications in Math-Net.Ru

1. Periodic solution of a system of ordinary differential equations with a small parameter in the terms containing derivatives
   
   Dokl. Akad. Nauk SSSR, 132:3 (1960),  537–540
2. Approximate solution of a system of ordinary differential equations involving a small parameter in the derivatives
   
   Dokl. Akad. Nauk SSSR, 131:2 (1960),  255–258