@inproceedings{michael2009generalized,
title={Generalized Bäcklund–Darboux transformations for Coxeter–Toda flows from a cluster algebra perspective},
author={Michael Gekhtman, Michael Shapiro, and Alek Vainshtein},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203356558690739},
booktitle={Acta Mathematica},
volume={206},
number={2},
pages={245-310},
year={2009},
}

Michael Gekhtman, Michael Shapiro, and Alek Vainshtein. Generalized Bäcklund–Darboux transformations for Coxeter–Toda flows from a cluster algebra perspective. 2009. Vol. 206. In Acta Mathematica. pp.245-310. http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203356558690739.