1. A new balanced incomplete block design;Bhattacharya;Sci. Cult.,1944
2. A new nonexistensible (16, 24, 9, 6, 3)-design;Brown;J. Combinatorial Theory A,1975
3. Combinatorial Theory;Hall,1967
4. Incomplete block designs with v = 2k;Preece;Sankhyā A,1967
5. (19, 9, 4) Hadamard designs and their residual designs;Singhi;J. Combinatorial Theory A,1974