Niculescu, C. P., & Persson, L. (2006). Convex Functions and Their Applications: A Contemporary Approach. Springer Science+Business Media, Inc..

Niculescu, Constantin P., and Lars-Erik Persson. Convex Functions and Their Applications: A Contemporary Approach. New York, NY: Springer Science+Business Media, Inc., 2006.

Niculescu, Constantin P., and Lars-Erik Persson. Convex Functions and Their Applications: A Contemporary Approach. Springer Science+Business Media, Inc., 2006.