TY  - BOOK
AU  - Kuczma, Marek
AU  - Gilanyi, Attila, Ed.
TI  - An introduction to the theory of functional equations and inequalities: Cauchy's equation and Jensen's inequality
SN  - 9783764387488
U1  - 515.75 
PY  - 2009///
CY  - Basel
PB  - Birkhauser
KW  - Functional equations
ER  -