TY  - GEN
AU  - Baeza - Yates, Ricardo 
TI  - Modern information retrieval
SN  - 9788131709771
PY  - 2007///
CY  - New Delhi
PB  - Pearson
KW  - Retrieval evaluation
KW  - Query operations
KW  - Web searching
KW  - Digital libraries
ER  -