TY  - BOOK
AU  - Aczel J
AU  -  Dhombres J
TI  - Functional equations in several variables: With applications to the mathematics, information theory and to natural and social sciences
T2  - Encyclopaedia of mathematics an its applications; 31
U1  - B37, M9 
PY  - 1989///
CY  - Cambridge
PB  - Cambridge University Press       
KW  - Real variables
ER  -