@article{DMGT_2006_26_1_a3,
     author = {Peterin, Iztok},
     title = {A characterization of planar median graphs},
     journal = {Discussiones Mathematicae. Graph Theory},
     pages = {41--48},
     publisher = {mathdoc},
     volume = {26},
     number = {1},
     year = {2006},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/DMGT_2006_26_1_a3/}
}