@article{ITA_1975__9_2_13_0,
     author = {Ehrenfeucht, A. and Rozenberg, G.},
     title = {A pumping theorem for deterministic {ETOL} languages},
     journal = {Revue fran\c{c}aise d'automatique informatique recherche op\'erationnelle. Informatique th\'eorique},
     pages = {13--23},
     publisher = {Dunod-Gauthier-Villars},
     address = {Paris},
     volume = {9},
     number = {R2},
     year = {1975},
     mrnumber = {388860},
     language = {en},
     url = {http://archive.numdam.org/item/ITA_1975__9_2_13_0/}
}