1. On the construction of balanced incomplete block designs;Bose;Ann. Eugenics,1939
2. Tables of Two-Associate-Class Partially Balanced Designs;Clatworthy,1973
3. Latin Squares and Their Applications;Denes,1974
4. Generalised Bhaskar Rao designs with block size 3 over Z4;De Launey;Ars Combinat.,1985