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| doi = 10.1287/mnsc.22.11.1268
| doi = 10.1287/mnsc.22.11.1268
| issue = 11
| issue = 11
| journal = {{tsl|en|Management Science (journal)||Management Science}}
| journal = Management Science
| mr = 0403596
| mr = 0403596
| pages = 1268–1272
| pages = 1268–1272
| year = 1976}}.</ref>
| year = 1976}}.</ref>
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===最短或最长路径问题===
===最短或最长路径问题===