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MR 1088485 |
Zbl 0741.05041
[2] L. Nebeský:
A characterization of the set of all shortest paths in a connected graph. Math. Bohemica 119 (1994), 15–20.
MR 1303548
[3] L. Nebeský:
On the set of all shortest paths of a given length in a connected graph. Czechoslovak Math. Journal 46 (121) (1996), 155–160.
MR 1371697