TY  - BOOK
AU  - Goldberg, Samuel
TI  - Introduction to difference equations: with illustrative examples from economics, psychology, and sociology
U1  - 515.625 
PY  - 1958///
CY  - New York
PB  - John Wiley & Sons
KW  - Ecuaciones diferenciales
KW  - Modelos matemáticos
ER  -