@article{JEMS_2012_14_4_a4,
     author = {Anna Felikson and Michael Shapiro and Pavel Tumarkin},
     title = {Skew-symmetric cluster algebras of finite mutation type},
     journal = {Journal of the European Mathematical Society},
     pages = {1135--1180},
     publisher = {mathdoc},
     volume = {14},
     number = {4},
     year = {2012},
     doi = {10.4171/jems/329},
     url = {http://geodesic.mathdoc.fr/articles/10.4171/jems/329/}
}