TY  - BOOK
AU  - Levitin,Anany
AU  - Levitin,Maria
TI  - Algorithmic Puzzles
SN  - 9780199740444
U1  - 005.1 
PY  - 2011///
CY  - USA
PB  - OUP
KW  - Algorithms
KW  - Mathematical recreations
ER  -