TY  - BOOK
AU  -  Aho, Alfred V
AU  - Hopcroft, John E
AU  - Ullman, Jeffrey D
TI  - The Design and analysis of computer algorithms / 
SN  - 978-8131702055
U1  - 004  
PY  - 2007///
CY  - New Delhi
PB  - Pearson Education Asia, 
ER  -