@article{ITA_1983__17_1_13_0, author = {Ehrenfeucht, A. and Rozenberg, G.}, title = {On the separating power of {EOL} systems}, journal = {RAIRO. Informatique th\'eorique}, pages = {13--22}, publisher = {EDP-Sciences}, volume = {17}, number = {1}, year = {1983}, mrnumber = {701985}, zbl = {0512.68059}, language = {en}, url = {http://www.numdam.org/item/ITA_1983__17_1_13_0/} }