@article{MZ_1970__113_171285,
     author = {Gerhard Michler and Rudolf Wille},
     title = {Die primitiven {Klassen} arithmetischer {Ringe.}},
     journal = {Mathematische Zeitschrift},
     pages = {369--372},
     publisher = {mathdoc},
     volume = {113},
     year = {1970},
     zbl = {0207.04703},
     url = {http://geodesic.mathdoc.fr/item/MZ_1970__113_171285/}
}