Hadamard 2-(47, 23, 11) Designs havingFrob<sub>55</sub> as an Automorphism Group.

Dean Crnkovic Sanja Rukavina Hadamard 2-(47, 23, 11) Designs havingFrob<sub>55</sub> as an Automorphism Group. 88-89 2001 10 Electronic Notes in Discrete Mathematics http://dx.doi.org/10.1016/S1571-0653(04)00366-X db/journals/endm/endm10.html#CrnkovicR01