@article{10_37236_96,
     author = {Yair Caro and Douglas B. West},
     title = {Repetition number of graphs},
     journal = {The electronic journal of combinatorics},
     year = {2009},
     volume = {16},
     number = {1},
     doi = {10.37236/96},
     zbl = {1178.05029},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/96/}
}