@article{ITA_1975__9_1_5_0,
     author = {Rodriguez, Fran\c{c}ois},
     title = {Une double hi\'erarchie infinie de langages v\'erifiables},
     journal = {Revue fran\c{c}aise d'automatique informatique recherche op\'erationnelle. Informatique th\'eorique},
     pages = {5--19},
     publisher = {Dunod-Gauthier-Villars},
     address = {Paris},
     volume = {9},
     number = {R1},
     year = {1975},
     mrnumber = {418523},
     zbl = {0352.68088},
     language = {fr},
     url = {http://www.numdam.org/item/ITA_1975__9_1_5_0/}
}