@article{ITA_1996__30_1_81_0,
     author = {Robson, J. M.},
     title = {Separating words with machines and groups},
     journal = {RAIRO - Theoretical Informatics and Applications - Informatique Th\'eorique et Applications},
     pages = {81--86},
     publisher = {EDP-Sciences},
     volume = {30},
     number = {1},
     year = {1996},
     mrnumber = {1398859},
     zbl = {0851.68076},
     language = {en},
     url = {http://www.numdam.org/item/ITA_1996__30_1_81_0/}
}