@article{ITA_2007__41_3_285_0,
     author = {Carlsen, Toke M. and Eilers, S{\o}ren},
     title = {A graph approach to computing nondeterminacy in substitutional dynamical systems},
     journal = {RAIRO - Theoretical Informatics and Applications - Informatique Th\'eorique et Applications},
     pages = {285--306},
     publisher = {EDP-Sciences},
     volume = {41},
     number = {3},
     year = {2007},
     doi = {10.1051/ita:2007020},
     mrnumber = {2354359},
     language = {en},
     url = {http://archive.numdam.org/articles/10.1051/ita:2007020/}
}