@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. Informatique th\'eorique}, pages = {43--56}, publisher = {EDP-Sciences}, volume = {19}, number = {1}, year = {1985}, mrnumber = {795771}, zbl = {0601.68053}, language = {en}, url = {http://archive.numdam.org/item/ITA_1985__19_1_43_0/} }