1. T. A. Alraqad, and M. S. Shrikhande, An overview of embedding problems of quasi-residual designs, (2007), preprint.
2. On a new class of productive regular Hadamard matrices;Behbahani;Discrete Math,2006
3. A new balanced incomplete block design;Bhattacharya;Sci Cult,1944
4. Strongly regular graphs derived from combinatorial designs;Goethals;Canad J Math,1970