@article{ITA_1977__11_3_181_0,
     author = {Sudborough, I. H.},
     title = {Some remarks on multihead automata},
     journal = {RAIRO. Informatique th\'eorique},
     pages = {181--195},
     publisher = {Centrale des revues, Dunod-Gauthier-Villars},
     address = {Montreuil},
     volume = {11},
     number = {3},
     year = {1977},
     mrnumber = {474983},
     zbl = {0369.68035},
     language = {en},
     url = {http://archive.numdam.org/item/ITA_1977__11_3_181_0/}
}