1. A. Blokhuis, A.E. Brouwer, Uniqueness of a Zara graph on 126 points and nonexistence of a completely regular two-graph on 288 points, Papers dedicated to J. J. Seidel (P. J. de Doelder, J. de Graaf, J. H. van Lint, eds.), Techn. Univ. Eindhoven report 84-WSK-03, 1984, 6–19.
2. Characterization theorems for Zara graphs;Blokhuis;Europ. J. Combin.,1989
3. N. Bourbaki, Groupes et algebres de Lie, Ch. IV, V, VI, Hermann, 1968.
4. A.E. Brouwer, A.M. Cohen, and A. Neumaier, Distance Regular Graphs, Springer, 1989.
5. F. C. Bussemaker, R. A. Mathon, J. J. Seidel, Tables of two-graphs, Combinatorics and graph theory, L.N.M. (S. B. Rao, ed.), vol. 885, Springer, 1981, 70 112; Report 79–WSK-05, Techn Univ. Eindhoven, 1979.