Conditions of existence quasiperiodic solutions for some ordinary differential equations of first and second order Jordanka Mitevska; Marija Kujumdzieva-Nikoloska — 2005 Kragujevac Journal of Mathematics
Conditions of existence quasiperiodic solutions for some nonlinear differential equations of second order and third power Marija Kujumdzieva-Nikoloska; Jordanka Mitevska — 2005 Kragujevac Journal of Mathematics