TY  - JOUR
AU  - Gruska, Jozef
TI  - Two Operations with Formal Languages and their Influence upon Structural Unambiguity
JO  - Mathematica slovaca
PY  - 1966
SP  - 58
EP  - 65
VL  - 16
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MASLO_1966__16_1_a8/
LA  - en
ID  - MASLO_1966__16_1_a8
ER  -