@article{CRMATH_2003__336_2_111_0,
     author = {Tan, Bo and Wen, Zhi-Xiong and Zhang, Yiping},
     title = {Invertible substitutions on a three-letter alphabet},
     journal = {Comptes Rendus. Math\'ematique},
     pages = {111--116},
     publisher = {Elsevier},
     volume = {336},
     number = {2},
     year = {2003},
     doi = {10.1016/S1631-073X(02)00006-7},
     language = {en},
     url = {http://www.numdam.org/articles/10.1016/S1631-073X(02)00006-7/}
}