Tkachev V F

Publications in Math-Net.Ru

1. A new theorem on $k$-twins, analogous to Wilson's theorem on prime numbers
   
   Uspekhi Mat. Nauk, 20:4(124) (1965),  174–175
2. Necessary and sufficient conditions for the stability, semi-stability and non-stability of a limit cycle and some of their applications
   
   Mat. Sb. (N.S.), 56(98):3 (1962),  281–300
3. Generalization of a theorem of H. Poincaré on the non-existence of limit cycles and some other results
   
   Uspekhi Mat. Nauk, 16:5(101) (1961),  205–207
4. Criteria for nonexistence of arbitrary and of multiple limit cycles
   
   Mat. Sb. (N.S.), 52(94):3 (1960),  811–822
5. New sufficient conditions for stability, semistability and instability of the limit cycle of the $\frac{dy}{dx}=\frac{P(x,y)}{Q(x,y)}$ equation
   
   Dokl. Akad. Nauk SSSR, 116:4 (1957),  564–567