@article{CMUC_1984__25_1_a13,
     author = {Trenkler, M.},
     title = {Convex 4-valent polytopes with prescribed types of faces},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {171--179},
     publisher = {mathdoc},
     volume = {25},
     number = {1},
     year = {1984},
     mrnumber = {749125},
     zbl = {0551.52005},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_1984__25_1_a13/}
}