APREUTESEI, Gabriela, and Teodor PRECUPANU. “A Dual Mapping Associated to a Closed Convex Set and Some Subdifferential Properties”. Studia Universitatis Babeș-Bolyai Mathematica 69, no. 1 (March 20, 2024): 83–92. Accessed January 19, 2026. https://studia.reviste.ubbcluj.ro/index.php/subbmathematica/article/view/7143.