@article{BSMF_1987__115__19_0,
     author = {Kwiatkowski, Jan and Sikorski, Andrzej},
     title = {Spectral properties of {G-symbolic} {Morse} shifts},
     journal = {Bulletin de la Soci\'et\'e Math\'ematique de France},
     pages = {19--33},
     publisher = {Soci\'et\'e math\'ematique de France},
     volume = {115},
     year = {1987},
     doi = {10.24033/bsmf.2067},
     mrnumber = {88i:28032},
     zbl = {0624.28014},
     language = {en},
     url = {http://archive.numdam.org/articles/10.24033/bsmf.2067/}
}