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@article{CM_1968__19_4_290_0, author = {Beineke, Lowell W. and Chartrand, Gary}, title = {The coarseness of a graph}, journal = {Compositio Mathematica}, pages = {290--298}, publisher = {Wolters-Noordhoff Publishing}, volume = {19}, number = {4}, year = {1968}, mrnumber = {240002}, zbl = {0176.22302}, language = {en}, url = {http://geodesic.mathdoc.fr/item/CM_1968__19_4_290_0/} }
Beineke, Lowell W.; Chartrand, Gary. The coarseness of a graph. Compositio Mathematica, Tome 19 (1968) no. 4, pp. 290-298. http://geodesic.mathdoc.fr/item/CM_1968__19_4_290_0/