Geodesic
On automorphisms of a~strongly regular graph $(784,116,0,20)$
Sibirskie èlektronnye matematičeskie izvestiâ, Tome 5 (2008), pp. 80-87.

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It is studied the group $G$ of automorphisms of a strongly regular graph with parameters $(784,116,0,20)$. We proved that if $G$ contain an element of prime order $p$, then $p\in\{2,7\}$. As a corollary, it is followed that the group of automorphisms of this srg is not quasy primitive. 
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A. L. Gavrilyuk. On automorphisms of a~strongly regular graph $(784,116,0,20)$. Sibirskie èlektronnye matematičeskie izvestiâ, Tome 5 (2008), pp. 80-87. http://geodesic.mathdoc.fr/item/SEMR_2008_5_a9/

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