FRENK JBG, DOS SANTOS GROMICHO JA, ZHANG S. Quasiconvex functions: how to separate, if you must!. Stud. Univ. Babeş-Bolyai Math. [Internet]. 2022 Mar. 10 [cited 2025 Feb. 5];67(1):105-28. Available from: https://studia.reviste.ubbcluj.ro/index.php/subbmathematica/article/view/1451