@article{10_37236_2741,
     author = {Matthias Beck and Tristram Bogart and Tu Pham},
     title = {Enumeration of {Golomb} rulers and acyclic orientations of mixed graphs},
     journal = {The electronic journal of combinatorics},
     year = {2012},
     volume = {19},
     number = {3},
     doi = {10.37236/2741},
     zbl = {1253.05014},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/2741/}
}