TY  - BOOK
AU  - Knuth, Donald E.
TI  - Art of computer programming: combinatorial algorithms 
SN  - 9788131761939
U1  - 005.73  1
PY  - 2011///
CY  - New Delhi
PB  - Pearson
KW  - Combinatorial searching
KW  - Generating basic combinatorial patterns
ER  -