Conditions for the integrability of a second order nonlinear differential equation. V.Lj. Kocic — 1980 Publications de l'Institut Mathématique [Elektronische Ressource]
Some examples for nonlinear superposition. V.Lj. Kocic — 1977 Publications de l'Institut Mathématique [Elektronische Ressource]
Second order nonlinear differential equations equivalent to linear differential equations. V.Lj. Kocic; J.D. Keckic — 1978 Publications de l'Institut Mathématique [Elektronische Ressource]
On the convergence of certain sequences, V. V.Lj. Kocic; J.D. Keckic — 1974 Publications de l'Institut Mathématique [Elektronische Ressource]
Oscillating solutions of linear differential equations. V.Lj. Kocic; J.D. Keckic — 1977 Publications de l'Institut Mathématique [Elektronische Ressource]