Journal of Mathematical Inequalities · Volume 11, Issue 2 The Steffensen-Popoviciu measures in the context of quasiconvex functions 11-39 Pages 469-483 DOI 10.7153/jmi-11-39 Downloads Short PDF Full PDF PNG Authors Constantin P. Niculescu Marius M. Stănescu Keywords Jensen's inequality convex function quasiconvex function signed measure Rayleigh measure Cauchy's interlace theorem Subject classes 26A51 26B25 26D15 28A10