@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://www.numdam.org/item/CM_1968__19_4_290_0/}
}