@article{ELMA_1963__18_140760,
     author = {Eckford Cohen},
     title = {Arithmetical {Notes,} {XIII.} {A} {Sequal} to {Note} {IV.}},
     journal = {Elemente der Mathematik},
     pages = {8--11},
     publisher = {mathdoc},
     volume = {18},
     year = {1963},
     zbl = {0147.30001},
     url = {http://geodesic.mathdoc.fr/item/ELMA_1963__18_140760/}
}