Jean Berstel, Luc Boasson. Shuffle factorization is unique. Theoretical Computer Science, 273(1-2):47-67, 2002. [doi]
@article{BerstelB02:1,
title = {Shuffle factorization is unique},
author = {Jean Berstel and Luc Boasson},
year = {2002},
doi = {10.1016/S0304-3975(00)00433-3},
url = {http://dx.doi.org/10.1016/S0304-3975(00)00433-3},
researchr = {https://researchr.org/publication/BerstelB02%3A1},
cites = {0},
citedby = {0},
journal = {Theoretical Computer Science},
volume = {273},
number = {1-2},
pages = {47-67},
}