TY  - BOOK
AU  - Knuth, Donald E.
TI  - Art of computer programming: fundamental algorithms 
SN  - 9788177587548
U1  - 005.73  3
PY  - 2008///
CY  - New Delhi
PB  - Pearson Education
KW  - Mathematical preliminaries
KW  - Binary tree representation of trees
ER  -