The existence of a Bush-Type Hadamard Matrix of order 324 and two new infinite classes of symmetric designs, Zvonimir Janko, Hadi Kharaghani, Vladimir Tonchev
Department of Mathematical Sciences Publications

Bush‐type Hadamard matrices and symmetric designs, Zvonimir Janko, Hadi Kharaghani, Vladimir Tonchev
Department of Mathematical Sciences Publications

New Designs with Block Size 7, Zvonimir Janko, Vladimir Tonchev
Michigan Tech Publications