%0 Journal Article %A Song, Sung Y. %T Commutative association schemes whose symmetrizations have two classes %J Journal of Algebraic Combinatorics %D 1996 %P 47-55 %V 5 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/JAC_1996__5_1_a1/ %G en %F JAC_1996__5_1_a1