TY - JOUR AU - van Dam, Edwin R. TI - Bounds on special subsets in graphs, eigenvalues and association schemes JO - Journal of Algebraic Combinatorics PY - 1998 SP - 321 EP - 332 VL - 7 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/JAC_1998__7_3_a0/ LA - en ID - JAC_1998__7_3_a0 ER -