Koolen J, Gebremichel B. There Does Not Exist a Strongly Regular Graph with Parameters $(1911,270,105,27)$. Electron. J. Combin. [Internet]. 2022Apr.1 [cited 2026Apr.4];29(2):P2.3. Available from: https://www.combinatorics.org/ojs/index.php/eljc/article/view/v29i2p3