Breckner, W. W. (2008). Convex functions and related functional equations: Selected topics. Presa Universitară Clujeană.
Chicago-Zitierstil (17. Ausg.)Breckner, Wolfgang W. Convex Functions and Related Functional Equations: Selected Topics. Cluj-Napoca: Presa Universitară Clujeană, 2008.
MLA-Zitierstil (9. Ausg.)Breckner, Wolfgang W. Convex Functions and Related Functional Equations: Selected Topics. Presa Universitară Clujeană, 2008.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.