Geodesic
On automorphisms of strongly regular graphs with $\lambda=0$, $\mu=2$
Sbornik. Mathematics, Tome 195 (2004) no. 3, pp. 347-367

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The structure of fixed-point subgraphs of automorphisms of order 3 of strongly regular graphs with parameters $(v,k,0, 2)$ is determined. Let $G$ be the automorphism group of a hypothetical strongly regular graph with parameters $(352, 26, 0, 2)$. Possible orders are found and the structure of fixed-point subgraphs is determined for elements of prime order in $G$. The four-subgroups of $G$ are classified and the possible structure of the group $G$ is determined. A strengthening of a result of Nakagawa on the automorphism groups of strongly regular graphs with $\lambda=0$, $\mu=2$ is obtained. 
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     author = {A. A. Makhnev and V. V. Nosov},
     title = {On automorphisms of strongly regular graphs with $\lambda=0$, $\mu=2$},
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     year = {2004},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_2004_195_3_a2/}
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A. A. Makhnev; V. V. Nosov. On automorphisms of strongly regular graphs with $\lambda=0$, $\mu=2$. Sbornik. Mathematics, Tome 195 (2004) no. 3, pp. 347-367. http://geodesic.mathdoc.fr/item/SM_2004_195_3_a2/