共 18 条
[1]
ACHILIOPTAS D, 1997, P RALCOM 7, P1
[2]
[Anonymous], 1979, Computers and Intractablity: A Guide to the Theoryof NP-Completeness
[3]
Chvatal V., 1992, Proceedings 33rd Annual Symposium on Foundations of Computer Science (Cat. No.92CH3188-0), P620, DOI 10.1109/SFCS.1992.267789
[5]
GLIOZZI AS, STRUCTURE SPACE SOLU
[7]
Goerdt A., 1992, P 7 INT S MATH FDN C, P264
[8]
Hayes B, 1997, AM SCI, V85, P108
[9]
HOGG T, 1996, ARTIF INTELL, V81