1.
ORZAN A, POPOVICI N. Convexity-preserving properties of set-valued ratios of affine functions. Stud. Univ. Babeş-Bolyai Math. [Internet]. 2021 Sep. 30 [cited 2025 Feb. 5];66(3):591–602. Available from: https://studia.reviste.ubbcluj.ro/index.php/subbmathematica/article/view/1375