1. Bang, S., Dubickas, A., Koolen, J.H., Moulton, V.: There are only finitely many distance-regular graphs of fixed valency greater than two. Adv. Math. 269, 1–55 (2015)
2. Bannai, Eiichi, Bannai, Etsuko: On primitive symmetric association schemes with $$m_1=3$$. Contrib. Discrete Math. 1(1), 68–79 (2006)
3. Bannai, E., Ito, T.: Algebraic Combinatorics. I. The Benjamin/Cummings Publishing Co., Inc, Menlo Park (1984)
4. Bannai, E., Sali, A.: On association schemes of balanced property with $$m_1=4$$. Sūrikaisekikenkyūsho Kōkyūroku, (991):80–92, 1997. Group theory and combinatorial mathematics (Japanese) (Kyoto) (1996)
5. Bannai, E., Zhao, D.: Spherical embeddings of symmetric association schemes in 3-dimensional euclidean space. Gr. Comb. (2019)