TY  - BOOK
AU  - Du, Ding-Zhu
AU  - Ko, Ker-
TI  - Design and analysis of approximation algorithms
SN  - 9781461417002
U1  - 516.00285 
PY  - 2012///
CY  - New York
PB  - Springer
KW  - Approximation algorithms
ER  -