[1] T. Needham, A visual explanation of Jensen’s inequality,
American Mathematical Monthly 100 (1993), 768-771.
[2] C. P. Niculescu and L. E. Persson, Convex Functions and their
Applications, Canadian Mathematical Society, Springer, New York, USA,
2006.
[3] Z. Pavić, Convex combinations, barycenters and convex
functions, Journal of Inequalities and Applications, Volume 2013,
Article 61, Pages 13, (2013).
[4] Z. Pavić, Inequalities using convex combination centers and
set barycenters, Journal of Mathematical Sciences: Advances and
Applications 24 (2013), 29-46.
[5] R. T. Rockafellar, Convex Analysis, Princeton University Press,
New Jersey, USA, 1972.