TY  - BOOK
AU  -  Levitin, Anany. 
AU  - Levitin, Maria.
TI  - Algorithmic Puzzles
SN  - 9780199740444
U1  - 793.74 
PY  - 2011///
CY  - New York
PB  - Oxford University Press  
KW  - Mathematical recreation, Algorithms
ER  -