@article{MZ_1969__110_171155,
     author = {Raphael M. Robinson},
     title = {Conjugate {Algebraic} {Integers} on a {Circle.}},
     journal = {Mathematische Zeitschrift},
     pages = {41--51},
     year = {1969},
     volume = {110},
     zbl = {0179.07701},
     url = {http://geodesic.mathdoc.fr/item/MZ_1969__110_171155/}
}