Persidskaya L B

Publications in Math-Net.Ru

1. Those characteristics of a system of three differential equations that tend to the origin along a spiral and have infinite order of curvature
   
   Izv. Vyssh. Uchebn. Zaved. Mat., 1971, no. 10,  42–46
2. Singular and quasisingular orders of curvature of integral curves in three-dimensional space
   
   Izv. Vyssh. Uchebn. Zaved. Mat., 1970, no. 2,  32–39
3. On extending Frommer's method of investigation of a singular point to a system of three differential equations
   
   Izv. Vyssh. Uchebn. Zaved. Mat., 1968, no. 9,  44–54