Geodesic
Automorphisms of Graphs with Intersection Arrays $\{60,45,8;1,12,50\}$ and~$\{49,36,8;1,6,42\}$
Matematičeskie zametki, Tome 101 (2017) no. 6, pp. 823-831

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Automorphisms of distance-regular graphs are considered. It is proved that any graph with the intersection array $\{60,45,8;1,12,50\}$ is not vertex symmetric, and any graph with the intersection array $\{49,36,8;1,6,42\}$ is not edge symmetric.
Keywords: distance regular graph, vertex symmetric graph. 
@article{MZM_2017_101_6_a2,
     author = {A. L. Gavrilyuk and A. A. Makhnev},
     title = {Automorphisms of {Graphs} with {Intersection} {Arrays} $\{60,45,8;1,12,50\}$ and~$\{49,36,8;1,6,42\}$},
     journal = {Matemati\v{c}eskie zametki},
     pages = {823--831},
     publisher = {mathdoc},
     volume = {101},
     number = {6},
     year = {2017},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2017_101_6_a2/}
}
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A. L. Gavrilyuk; A. A. Makhnev. Automorphisms of Graphs with Intersection Arrays $\{60,45,8;1,12,50\}$ and~$\{49,36,8;1,6,42\}$. Matematičeskie zametki, Tome 101 (2017) no. 6, pp. 823-831. http://geodesic.mathdoc.fr/item/MZM_2017_101_6_a2/