共 6 条
[1]
[Anonymous], 1971, STOC 71, DOI DOI 10.1145/800157.805047
[3]
Garey M.R., 1979, COMPUTERS INTRACTABI, V174
[4]
Simon J. C., 1989, International Journal of Pattern Recognition and Artificial Intelligence, V3, P53, DOI 10.1142/S0218001489000061
[5]
SIMON JC, 1986, CR ACAD SCI I-MATH, V302, P283
[6]
SIMON JC, 1987, ESPR WORKSHOP NOVOSI