@article{DMGT_1997_17_2_a6,
     author = {Borodin, O.},
     title = {Minimal vertex degree sum of a 3-path in plane maps},
     journal = {Discussiones Mathematicae. Graph Theory},
     pages = {279--284},
     publisher = {mathdoc},
     volume = {17},
     number = {2},
     year = {1997},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/DMGT_1997_17_2_a6/}
}