1. Primitive rank 3 groups with a prime subdegree;Higman, Donald G.;Math. Z.,1966
2. A simple group of order 44,352,000;Higman, Donald G.;Math. Z.,1968
3. On the simple group of D. G. Higman and C. C. Sims;Higman, Graham;Illinois J. Math.,1969
4. 4. D. Hunt, The Higman-Sims simple group, M. Sci. Thesis, Warwick University, England, 1968.
5. A characterization of the Higman-Sims simple group;Janko, Zvonimir;J. Algebra,1969