@article{MZ_1968__107_171066,
     author = {Gordon Keller},
     title = {Concerning the {Degrees} of {Irreducible} {Characters.}},
     journal = {Mathematische Zeitschrift},
     pages = {221--224},
     publisher = {mathdoc},
     volume = {107},
     year = {1968},
     zbl = {0186.32801},
     url = {http://geodesic.mathdoc.fr/item/MZ_1968__107_171066/}
}