On the existence of a maximal element of multivalued mappings in H -spaces. Hadžić, Olga — 1998 Novi Sad Journal of Mathematics
On coincidence theorems for a family of mappings in convex metric spaces. Hadžić, Olga — 1987 International Journal of Mathematics and Mathematical Sciences
On Caristi's fixed point theorem in F-type topological spaces. Hadžić, Olga; Žikić, Tatjana — 1998 Novi Sad Journal of Mathematics
A coincidence point theorem for multivalued mappings in 2-Menger spaces. Hadžić, Olga; Ovcin, Zoran — 1998 Novi Sad Journal of Mathematics
On multivalued mappings in paranormed spaces Olga Hadžić — 1981 Commentationes Mathematicae Universitatis Carolinae
On equilibrium point in topological vector spaces Olga Hadžić — 1982 Commentationes Mathematicae Universitatis Carolinae
A Theorem On Fixed Points In Locally Convex Spaces Olga Hadžić; Đura Paunić — 1976 Publications de l'Institut Mathématique
Tourism and digitization of cultural heritage Olga Hadžić — 2004 Review of the National Center for Digitization
Countable extension of triangular norms and their applications to the fixed point theory in probabilistic metric spaces Olga Hadžić; Endre Pap; Mirko Budinčević — 2002 Kybernetika