Knapp W, Schaeffer H-J. On the Codes Related to the Higman-Sims Graph. Electron. J. Combin. [Internet]. 2015Jan.27 [cited 2026Mar.15];22(1):P1.19. Available from: https://www.combinatorics.org/ojs/index.php/eljc/article/view/v22i1p19