TY  - JOUR
AU  - Gruska, Jozef
TI  - Correction to: “On star height hierarchies of context-free languages”
JO  - Kybernetika
PY  - 1973
VL  - 09
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/KYB_1973__9_6_a8/
LA  - en
ID  - KYB_1973__9_6_a8
ER  -