@article{ELMA_1975__30_141159,
     author = {J.E. Nymann},
     title = {Groups and {Fields} in {Zn.}},
     journal = {Elemente der Mathematik},
     pages = {82--83},
     publisher = {mathdoc},
     volume = {30},
     year = {1975},
     zbl = {0312.12026},
     url = {http://geodesic.mathdoc.fr/item/ELMA_1975__30_141159/}
}