References
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- Janko , Z. and Trung Tran , V. 1984 . The existence of a symmetric block design for (70, 24, 8) . Mitt. Math.Sem. Giesen , 165
- Ćepulić , V. 1990 . Construction of designs Zagreb preprint
- Ćepulić , V. and Essert , M. 1988 . Biplanes (56, 11, 2) with automorphism group Z2 × Z2 fixing some point . Journal of Comb.Therory , 48 ( 2 ) Series A