TY  - BOOK
AU  - Creignou, Nadia
AU  - Khanna, Sanjeev
AU  - Sudan, Madhu
TI  - Complexity classifications of boolean constraint satisfaction problems
T2  - SIAM monographs on Discrete Mathematics and applications
SN  - 0898714796
U1  - 511.3 
PY  - 2001///
CY  - Philadelphia
PB  - SIAM
ER  -