TY - JOUR AU - Černý, Anton TI - Descriptional complexity measures of context-free languages JO - Kybernetika PY - 1983 SP - 237 EP - 247 VL - 19 IS - 3 UR - http://geodesic.mathdoc.fr/item/KYB_1983_19_3_a4/ LA - en ID - KYB_1983_19_3_a4 ER -