@article{MS2_1963__12_165833,
     author = {G.A. Dirac},
     title = {On {Complete} {Graphs} and {Complete} {Stars} {Contained} as {Subgraphs} in {Graphs.}},
     journal = {Mathematica Scandinavica},
     pages = {39--46},
     publisher = {mathdoc},
     volume = {12},
     year = {1963},
     zbl = {0117.41104},
     url = {http://geodesic.mathdoc.fr/item/MS2_1963__12_165833/}
}