@incollection{AST_1977__49__109_0,
     author = {Kamae, Teturo},
     title = {Mutual singularity of spectra of dynamical systems given by "sums of digits" to different bases},
     booktitle = {Syst\`eme dynamique I - Varsovie},
     series = {Ast\'erisque},
     pages = {109--114},
     publisher = {Soci\'et\'e math\'ematique de France},
     number = {49},
     year = {1977},
     mrnumber = {485754},
     zbl = {0371.28018},
     language = {en},
     url = {http://www.numdam.org/item/AST_1977__49__109_0/}
}