@article{JRAM_1974__271_151508,
     author = {John Knopfmacher},
     title = {Arithmetical properties of finite rings and algebras, and analytical number theory. {V.} {Categories} and relative analytic number theory.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {95--121},
     publisher = {mathdoc},
     volume = {271},
     year = {1974},
     zbl = {0296.10025},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1974__271_151508/}
}