Geodesic
Metrically regular square of metrically regular bipartite graphs of diameter $D=6$
Archivum mathematicum, Tome 29 (1993) no. 1-2, pp. 29-38.

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The present paper deals with the spectra of powers of metrically regular graphs. We prove that there is only one table of the parameters of an association scheme so that the corresponding metrically regular bipartite graph of diameter $D = 6$ (7 distinct eigenvalues of the adjacency matrix) has the metrically regular square. The results deal with the graphs of the diameter $D 6$ see [7] and [8].
Classification : 05C50, 05C75, 05E30
Mots-clés : spectra of graphs; square of graphs; bipartite graphs; metrically regular graphs; association scheme 
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     author = {Vetch\'y, Vladim{\'\i}r},
     title = {Metrically regular square of metrically regular bipartite graphs of diameter $D=6$},
     journal = {Archivum mathematicum},
     pages = {29--38},
     publisher = {mathdoc},
     volume = {29},
     number = {1-2},
     year = {1993},
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     zbl = {0797.05060},
     language = {en},
     url = {https://geodesic-test.mathdoc.fr/item/ARM_1993__29_1-2_a5/}
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Vetchý, Vladimír. Metrically regular square of metrically regular bipartite graphs of diameter $D=6$. Archivum mathematicum, Tome 29 (1993) no. 1-2, pp. 29-38. https://geodesic-test.mathdoc.fr/item/ARM_1993__29_1-2_a5/