@article{MASLO_1986_36_4_a2,
     author = {Jendro\v{l}, Stanislav},
     title = {On face vectors of trivalent maps},
     journal = {Mathematica slovaca},
     pages = {367--386},
     year = {1986},
     volume = {36},
     number = {4},
     mrnumber = {871777},
     zbl = {0611.57009},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/MASLO_1986_36_4_a2/}
}