TY  - JOUR
AU  - V. D. Luchkin
TI  - Ranks of configurations of context-free languages
JO  - Algebra i logika
PY  - 1966
SP  - 59
EP  - 70
VL  - 5
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/AL_1966_5_3_a3/
LA  - ru
ID  - AL_1966_5_3_a3
ER  -