@article{MS2_1972__31_166257,
     author = {Elizabeth A. Magarian},
     title = {Direct {Limits} of {Power} {Series} {Rings.}},
     journal = {Mathematica Scandinavica},
     pages = {103--110},
     publisher = {mathdoc},
     volume = {31},
     year = {1972},
     zbl = {0247.13007},
     url = {http://geodesic.mathdoc.fr/item/MS2_1972__31_166257/}
}