Evdokimov, Sergei, and Ilia Ponomarenko. “Separability Number and Schurity Number of Coherent Configurations”. The Electronic Journal of Combinatorics 7, no. 1 (May 17, 2000): R31. Accessed March 16, 2026. https://www.combinatorics.org/ojs/index.php/eljc/article/view/v7i1r31.