@article{JAC_2011__34_3_a1,
     author = {Holm, Thorsten and J{\o}rgensen, Peter and Rubey, Martin},
     title = {Ptolemy diagrams and torsion pairs in the cluster category of {Dynkin} type $A _{n }$},
     journal = {Journal of Algebraic Combinatorics},
     pages = {507--523},
     publisher = {mathdoc},
     volume = {34},
     number = {3},
     year = {2011},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/JAC_2011__34_3_a1/}
}