@article{ITA_2009__43_2_221_0,
     author = {Latteux, Michel and Roos, Yves and Terlutte, Alain},
     title = {Minimal {NFA} and {biRFSA} languages},
     journal = {RAIRO - Theoretical Informatics and Applications - Informatique Th\'eorique et Applications},
     pages = {221--237},
     publisher = {EDP-Sciences},
     volume = {43},
     number = {2},
     year = {2009},
     doi = {10.1051/ita:2008022},
     mrnumber = {2512256},
     zbl = {1166.68025},
     language = {en},
     url = {http://www.numdam.org/articles/10.1051/ita:2008022/}
}