@article{ITA_2000__34_6_565_0,
     author = {Aceto, Luca and Ing\'olfsd\'ottir, Anna and Pedersen, Mikkel Lykke and Poulsen, Jan},
     title = {Characteristic formulae for timed automata},
     journal = {RAIRO - Theoretical Informatics and Applications - Informatique Th\'eorique et Applications},
     pages = {565--584},
     publisher = {EDP-Sciences},
     volume = {34},
     number = {6},
     year = {2000},
     mrnumber = {1844719},
     zbl = {0974.68121},
     language = {en},
     url = {http://archive.numdam.org/item/ITA_2000__34_6_565_0/}
}