Two sandwich theorems for linear operators and the moment problem. Olteanu, Octav — 1996 Balkan Journal of Geometry and its Applications (BJGA)
Solving some functional and operational equations. Olteanu, Alina; Olteanu, Octav — 2008 APPS. Applied Sciences
The construction of a function given by moments. (La construction de quelque fonction par des moments donnés.) Mihăilă, Janina Mihaela; Olteanu, Octav; Udrisţe, Constantin — 2008 Balkan Journal of Geometry and its Applications (BJGA)