Kulikov N K

Publications in Math-Net.Ru

1. Qualitative-quantitative investigation of the solutions of second-order ordinary linear homogeneous differential equations
   
   Izv. Vyssh. Uchebn. Zaved. Mat., 1965, no. 4,  75–83
2. A new method for solving linear and nonlinear total differential equations with variable coefficients. Determination of periodic solutions
   
   Izv. Vyssh. Uchebn. Zaved. Mat., 1958, no. 4,  140–152