@article{10_37236_362,
     author = {Nathan Reading and David E Speyer},
     title = {Sortable elements for quivers with cycles.},
     journal = {The electronic journal of combinatorics},
     year = {2010},
     volume = {17},
     doi = {10.37236/362},
     zbl = {1215.20039},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/362/}
}