TY  - JOUR
AU  - Cremers, A. B.
AU  - Weiss, K.
TI  - Some further remarks on the index of context-free languages
JO  - Kybernetika
PY  - 1973
SP  - 461
EP  - 466
VL  - 9
IS  - 6
UR  - http://geodesic.mathdoc.fr/item/KYB_1973_9_6_a2/
LA  - en
ID  - KYB_1973_9_6_a2
ER  -