@article{ARM_2004__40_2_a3,
     author = {Snellman, Jan},
     title = {The ring of arithmetical functions with unitary convolution: {Divisorial} and topological properties},
     journal = {Archivum mathematicum},
     pages = {161--179},
     publisher = {mathdoc},
     volume = {40},
     number = {2},
     year = {2004},
     mrnumber = {2068688},
     zbl = {1122.11004},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ARM_2004__40_2_a3/}
}