@article{10_37236_3540,
     author = {Dong Ye and Heping Zhang},
     title = {Face-width of {Pfaffian} braces and polyhex graphs on surfaces},
     journal = {The electronic journal of combinatorics},
     year = {2014},
     volume = {21},
     number = {4},
     doi = {10.37236/3540},
     zbl = {1305.05196},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/3540/}
}