@article{CRMATH_2011__349_3-4_119_0,
     author = {Berenstein, Arkady and Retakh, Vladimir},
     title = {A short proof of {Kontsevich's} cluster conjecture},
     journal = {Comptes Rendus. Math\'ematique},
     pages = {119--122},
     publisher = {Elsevier},
     volume = {349},
     number = {3-4},
     year = {2011},
     doi = {10.1016/j.crma.2011.01.004},
     language = {en},
     url = {http://www.numdam.org/articles/10.1016/j.crma.2011.01.004/}
}