@article{ITA_1985__19_1_43_0, author = {Ehrenfeucht, A. and Rozenberg, G.}, title = {Strong iterative pairs and the regularity of context-free languages}, journal = {RAIRO - Theoretical Informatics and Applications - Informatique Th\'eorique et Applications}, volume = {19}, year = {1985}, pages = {43-56}, mrnumber = {795771}, zbl = {0601.68053}, language = {en}, url = {http://dml.mathdoc.fr/item/ITA_1985__19_1_43_0} }
Ehrenfeucht, A.; Rozenberg, G. Strong iterative pairs and the regularity of context-free languages. RAIRO - Theoretical Informatics and Applications - Informatique Théorique et Applications, Tome 19 (1985) pp. 43-56. http://gdmltest.u-ga.fr/item/ITA_1985__19_1_43_0/
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