FRENK , J. B. G., DOS SANTOS GROMICHO , J. A. and ZHANG, S. (2022) “Quasiconvex functions: how to separate, if you must!”, Studia Universitatis Babeș-Bolyai Mathematica, 67(1), pp. 105–128. doi: 10.24193/subbmath.2022.1.08.