1. M. F. Newman, Werner Nickel, and Alice C. Niemeyer, Descriptions of groups of prime-power order, J. Symbolic Comput. 25 (1998), no. 5, 665–682.[MR]
  2. Werner Nickel, Alice C. Niemeyer, Christine M. O'Keefe, Tim Penttila, and Cheryl E. Praeger, The block-transitive, point-imprimitive 2-(729,8,1) designs, Appl. Algebra Engrg. Comm. Comput. 3 (1992), no. 1, 47–61.[MR]