@article{10_4064_cm114_1_11,
     author = {L. C. Hoehn and A. Karassev},
     title = {Equivalent metrics and the spans of graphs},
     journal = {Colloquium Mathematicum},
     pages = {135--153},
     year = {2009},
     volume = {114},
     number = {1},
     doi = {10.4064/cm114-1-11},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm114-1-11/}
}