TY  - BOOK
AU  - Kuczma Marek
AU  - Choczewski Bogdan
AU  - Ger Roman
TI  - Iterative functional equations
SN  - 0-521-35561-3
U1  - 515.62 
PY  - 1990///
CY  - Cambridge
PB  - CUP
KW  - Functional equations
KW  - Functions of real variables
ER  -