@article{10_37236_2684,
     author = {Sam Hopkins and David Perkinson},
     title = {Orientations, semiorders, arrangements, and parking functions},
     journal = {The electronic journal of combinatorics},
     year = {2012},
     volume = {19},
     number = {4},
     doi = {10.37236/2684},
     zbl = {1267.05138},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/2684/}
}