@article{CMJ_2008_58_4_a16,
     author = {Nebesk\'y, Ladislav},
     title = {On the distance function of a connected graph},
     journal = {Czechoslovak Mathematical Journal},
     pages = {1101--1106},
     year = {2008},
     volume = {58},
     number = {4},
     mrnumber = {2471169},
     zbl = {1174.05039},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMJ_2008_58_4_a16/}
}