@article{10_37236_1627,
     author = {Henry Cohn and Robin Pemantle and James Propp},
     title = {Generating a random sink-free orientation in quadratic time},
     journal = {The electronic journal of combinatorics},
     year = {2002},
     volume = {9},
     doi = {10.37236/1627},
     zbl = {0994.60004},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/1627/}
}