@article{AUM_2015_69_1_a6,
     author = {Bielak, Halina and Powro\'znik, Kamil},
     title = {Statuses and double branch weights of quadrangular outerplanar graphs},
     journal = {Annales Universitatis Mariae Curie-Sk{\l}odowska. Mathematica },
     publisher = {mathdoc},
     volume = {69},
     number = {1},
     year = {2015},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/AUM_2015_69_1_a6/}
}