Geodesic
On strongly regular graphs with parameters $(75,32,10,16)$ and $(95,40,12,20)$
Fundamentalʹnaâ i prikladnaâ matematika, Tome 6 (2000) no. 1, pp. 179-193.

Voir la notice de l'article provenant de la source Math-Net.Ru

It is proved that strongly regular graphs with parameters $(75,32,10,16)$ and $(95,40,12,20)$ which have regular $\mu$-subgraphs do not exist. In particular, strongly regular locally $\mathrm{GQ}(3,3)$-graphs with $\mu=20$ do not exist. 
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A. A. Makhnev. On strongly regular graphs with parameters $(75,32,10,16)$ and $(95,40,12,20)$. Fundamentalʹnaâ i prikladnaâ matematika, Tome 6 (2000) no. 1, pp. 179-193. http://geodesic.mathdoc.fr/item/FPM_2000_6_1_a14/