Investigation of stability on nonlinear oscilations with one degree of freedom Julka Knežević-Miljanović; Ljubica Lalović — 2003 Kragujevac Journal of Mathematics
Application of differential equations Julka Knežević-Miljanović; Ljubica Lalović; Dragomir Lalović — 2007 Kragujevac Journal of Mathematics
A class of growth and bounds to solutions of a differential equation. Knežević-Miljanović, Julka — 1999 Matematichki Vesnik
Existence conditions for periodic solutions of nonlinear third-order differential equations. Knežević-Miljanović, Julka — 2000 Matematichki Vesnik
Necessary conditions for existence of periodic solutions of a differential system. Knežević-Miljanović, Julka — 2005 Matematichki Vesnik