共 22 条
[1]
[Anonymous], 1979, Computers and Intractablity: A Guide to the Theory of NP-Completeness
[5]
Graham R. L., 1979, Discrete Optimisation, P287
[8]
Johnson S. M., 1954, NAVAL RES LOGISTICS, V1, P61, DOI [10.1002/nav.3800010110, DOI 10.1002/NAV.3800010110]