@article{10_37236_229,
     author = {Philippe Di Francesco and Rinat Kedem},
     title = {Positivity of the {\(T\)-system} cluster algebra},
     journal = {The electronic journal of combinatorics},
     year = {2009},
     volume = {16},
     number = {1},
     doi = {10.37236/229},
     zbl = {1229.13019},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/229/}
}