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@article{MZ_1966__94_170633, author = {Frank Harary and Michael D. Plummer}, title = {On the {Point-Core} of a {Graph.}}, journal = {Mathematische Zeitschrift}, pages = {382--386}, publisher = {mathdoc}, volume = {94}, year = {1966}, zbl = {0144.45404}, url = {http://geodesic.mathdoc.fr/item/MZ_1966__94_170633/} }
Frank Harary; Michael D. Plummer. On the Point-Core of a Graph.. Mathematische Zeitschrift, Tome 94 (1966), pp. 382-386. http://geodesic.mathdoc.fr/item/MZ_1966__94_170633/