@article{CRMATH_2002__334_8_629_0,
     author = {Wen, Zhi-Xiong and Wen, Zhi-Ying and Wu, Jun},
     title = {Invertible substitutions and local isomorphisms},
     journal = {Comptes Rendus. Math\'ematique},
     pages = {629--634},
     publisher = {Elsevier},
     volume = {334},
     number = {8},
     year = {2002},
     doi = {10.1016/S1631-073X(02)02234-3},
     language = {en},
     url = {http://www.numdam.org/articles/10.1016/S1631-073X(02)02234-3/}
}