@article{Meduna_Horváth_1988, title={On state grammars}, volume={8}, url={https://cyber.bibl.u-szeged.hu/index.php/actcybern/article/view/3336}, number={3}, journal={Acta Cybernetica}, author={Meduna, Alexander and Horváth, Gyula}, year={1988}, month={Jan.}, pages={237-245} }