TY  - BOOK
AU  - Gelfand, I. M. 
TI  - Functions and Graphs
SN  - 9780486425641
U1  - 515 GEL 
PY  - 2002///
CY  - New York
PB  - Dover Publication
KW  - Mathematics
KW  - Functions and Graphs
KW  - Quadratic
ER  -