TY  - BOOK
AU  - Aho, Alfred V
AU  - Ullman.
TI  - Design and analysis of computer  algorithms
SN  - 0201474492
U1  - 005.12028 
PY  - 2007///
CY  - New Delhi
PB  - Addison Wesley Longman
KW  - Computer programmingprograms data
ER  -