@article{ITA_2001__35_6_525_0,
     author = {Carton, Olivier and Choffrut, Christian},
     title = {Periodicity and roots of transfinite strings},
     journal = {RAIRO - Theoretical Informatics and Applications - Informatique Th\'eorique et Applications},
     pages = {525--533},
     publisher = {EDP-Sciences},
     volume = {35},
     number = {6},
     year = {2001},
     mrnumber = {1922293},
     zbl = {1005.68120},
     language = {en},
     url = {http://www.numdam.org/item/ITA_2001__35_6_525_0/}
}