Projective planes of order $q$ whose collineation groups have order $q\sp 2$ prefix ID Kantor, William M. J. Algebr. Comb. 3(4), 405-425 (1994)
1/2-transitive graphs of order $3p$ prefix ID Alspach, Brian; Xu, Ming-Yao J. Algebr. Comb. 3(4), 347-355 (1994)
