1. Tables of two-associate-class partially balanced designs;Clatworthy;NBS Applied Math. Ser. No. 63,1973
2. A cyclic method of constructing regular group divisible incomplete block designs;Freeman;Biometrika,1976
3. Computer construction of binary incomplete block designs;John;J. Statist. Planning Inf.,1976
4. Constructions and Combinatorial Problems in Design of Experiments;Raghavarao,1971