@article{MASLO_1978_28_3_a7,
     author = {D\"orfler, Willibald},
     title = {On mapping graphs and permutation graphs},
     journal = {Mathematica slovaca},
     pages = {277--288},
     year = {1978},
     volume = {28},
     number = {3},
     mrnumber = {534995},
     zbl = {0421.05035},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/MASLO_1978_28_3_a7/}
}