共 4 条
[1]
[Anonymous], 1957, GAMES DECIS
[2]
Garey MR., 1979, COMPUTERS INTRACTABI
[3]
HOFFMANN AJ, 1985, HISTORY, pCH1
[4]
Valiant L. G., 1979, Theoretical Computer Science, V8, P189, DOI 10.1016/0304-3975(79)90044-6