TY  - JOUR
AU  - Koolen, J.H.
TI  - On subgraphs in distance-regular graphs
JO  - Journal of Algebraic Combinatorics
PY  - 1992
SP  - 353
EP  - 362
VL  - 1
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/JAC_1992__1_4_a1/
LA  - en
ID  - JAC_1992__1_4_a1
ER  -