TY  - BOOK
AU  - Spiegel,Murray R.
TI  - Theory and problems of calculus of finite differences and difference equations / 
T2  - Schaum's Outline Series
PY  - 1971///
CY  - New York
PB  - McGraw-Hill
KW  - DIFERENCIAS FINITAS
KW  - DIFFERENCE CALCULUS
KW  - SUM CALCULUS
KW  - DEFFERENCE EQUATIONS
KW  - FINITE DIFFERENCES
ER  -