@article{DMGT_2011_31_2_a9,
     author = {Koz\'akov\'a, Veronika and Madaras, Tom\'a\v{s}},
     title = {On doubly light vertices in plane graphs},
     journal = {Discussiones Mathematicae. Graph Theory},
     pages = {333--344},
     publisher = {mathdoc},
     volume = {31},
     number = {2},
     year = {2011},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/DMGT_2011_31_2_a9/}
}