@article{ITA_2005__39_1_115_0,
     author = {Champarnaud, Jean-Marc and Guingne, Franck and Hansel, Georges},
     title = {Similarity relations and cover automata},
     journal = {RAIRO - Theoretical Informatics and Applications - Informatique Th\'eorique et Applications},
     pages = {115--123},
     publisher = {EDP-Sciences},
     volume = {39},
     number = {1},
     year = {2005},
     doi = {10.1051/ita:2005006},
     mrnumber = {2132581},
     zbl = {1102.68057},
     language = {en},
     url = {http://www.numdam.org/articles/10.1051/ita:2005006/}
}