TY  - BOOK
AU  - Garey, M R
AU  - Johnson, D S
TI  - Computers and Intractability: A Guide to the Theory of NP-Completeness 
SN  - 9780716710455
U1  - 519.4 
PY  - 1979///
PB  - WH Freeman
KW  - Mathematics
ER  -