Geodesic
On Automorphisms of a Generalized Octagon of Order $(2,4)$
Matematičeskie zametki, Tome 84 (2008) no. 4, pp. 516-526

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Possible orders and fixed-point subgraphs of automorphisms of a generalized octagon of order $(2,4)$ are found. The vertex-symmetric generalized octagon of order $(2,4)$ is proved to be classical.
Keywords: nonoriented graph, distance-regular graph, subgraph, generalized $n$-gon, finite simple group, Chevalley group, geodesic path, adjacency matrix.
Mots-clés : Tits group 
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     author = {I. N. Belousov and A. A. Makhnev},
     title = {On {Automorphisms} of a {Generalized} {Octagon} of {Order} $(2,4)$},
     journal = {Matemati\v{c}eskie zametki},
     pages = {516--526},
     publisher = {mathdoc},
     volume = {84},
     number = {4},
     year = {2008},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2008_84_4_a3/}
}
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I. N. Belousov; A. A. Makhnev. On Automorphisms of a Generalized Octagon of Order $(2,4)$. Matematičeskie zametki, Tome 84 (2008) no. 4, pp. 516-526. http://geodesic.mathdoc.fr/item/MZM_2008_84_4_a3/