TY - JOUR AU - Song, Sung Y. TI - Commutative association schemes whose symmetrizations have two classes JO - Journal of Algebraic Combinatorics PY - 1996 SP - 47 EP - 55 VL - 5 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/JAC_1996__5_1_a1/ LA - en ID - JAC_1996__5_1_a1 ER -