Publication Details

de Launey, W and Seberry, J, On Bhaskar Rao designs of block size four, Combinatorics and Applications, Proceedings of the Seminar on Combinatorics and its Applications in honour of Professor S.S.Shrikhande, (K.S.Vijayan and N.M.Singhi, (Eds.)), Indian Statistical Institute, Calcutta, 1984, 311-316.


We show that Bhaskar Rao designs of type BRD(v, b, r, 4, 6) exist for v = 0,1 (mod 5) and of type BRD (v, b, r, 4,12) exist for all v ≥ 4.