TY - JOUR AU - O. I. Egorushkin AU - K. V. Safonov TI - An analitic approach in the theory of context-free languages Greibach normal form JO - Prikladnaâ diskretnaâ matematika PY - 2009 SP - 112 EP - 116 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/PDM_2009_3_a12/ LA - ru ID - PDM_2009_3_a12 ER -