@article{DMGT_2008_28_3_a14,
     author = {Kim, Seog-Jim and West, Douglas},
     title = {Triangle-free planar graphs with minimum degree 3 have radius at least 3},
     journal = {Discussiones Mathematicae. Graph Theory},
     pages = {563--566},
     publisher = {mathdoc},
     volume = {28},
     number = {3},
     year = {2008},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/DMGT_2008_28_3_a14/}
}