%0 Journal Article %A Adegoke S. A. Osifodunrin %T On the existence of (196,91,42) Hadamard difference sets %J Kragujevac Journal of Mathematics %D 2010 %P 113 - 130 %V 34 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/KJM_2010_34_1_a9/ %F KJM_2010_34_1_a9