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On the sum of all distances in graphs. (English)
Tamkang J. Math. 25, No.1, 83-86 (1994).
The authors show that the sum of all distances between vertices in a connected graph may be any positive integer except 2 and 5. From this point of view, also bipartite graphs and trees are examined.
Reviewer: Ján Plesník (Bratislava)
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