@article{ITA_1979__13_3_289_0,
     author = {P\u{A}un, Gheorghe},
     title = {Some further remarks on the family of finite index matrix languages},
     journal = {RAIRO - Theoretical Informatics and Applications - Informatique Th\'eorique et Applications},
     pages = {289--297},
     publisher = {EDP-Sciences},
     volume = {13},
     number = {3},
     year = {1979},
     mrnumber = {554688},
     zbl = {0422.68036},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ITA_1979__13_3_289_0/}
}