Lebedeva V M

Publications in Math-Net.Ru

1. The number of periodic solutions of a first order differential equation with right-hand side in the form of an incomplete polynomial
   
   Differ. Uravn., 5:6 (1969),  1029–1036
2. The number of periodic solutions of a first order equation with rational right hand side
   
   Differ. Uravn., 5:3 (1969),  560–562
3. The number of periodic solutions of a first order differential equation with polynomial right hand side
   
   Differ. Uravn., 4:8 (1968),  1428–1432