APREUTESEI G, PRECUPANU T. A dual mapping associated to a closed convex set and some subdifferential properties. Stud. Univ. Babeş-Bolyai Math. [Internet]. 2024 Mar. 20 [cited 2025 Feb. 10];69(1):83-92. Available from: https://studia.reviste.ubbcluj.ro/index.php/subbmathematica/article/view/7143