The Existence of a Bush-Type Hadamard Matrix of Order 324 and Two New Infinite Classes of Symmetric Designs.

Zvonimir Janko Hadi Kharaghani Vladimir D. Tonchev The Existence of a Bush-Type Hadamard Matrix of Order 324 and Two New Infinite Classes of Symmetric Designs. 225-232 2001 24 Des. Codes Cryptography 2 db/journals/dcc/dcc24.html#JankoKT01