@article{ITA_1984__18_3_279_0,
     author = {Ehrenfeucht, Andrzej and Haussler, David and Rozenberg, Grzegorz},
     title = {On ambiguity in {DOS} systems},
     journal = {RAIRO. Informatique th\'eorique},
     pages = {279--295},
     publisher = {EDP-Sciences},
     volume = {18},
     number = {3},
     year = {1984},
     mrnumber = {763671},
     zbl = {0565.68068},
     language = {en},
     url = {http://www.numdam.org/item/ITA_1984__18_3_279_0/}
}