@article{CMJ_2002_52_1_a11,
     author = {Danchev, Peter V.},
     title = {Basic subgroups in abelian group rings},
     journal = {Czechoslovak Mathematical Journal},
     pages = {129--140},
     year = {2002},
     volume = {52},
     number = {1},
     mrnumber = {1885462},
     zbl = {1003.16026},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMJ_2002_52_1_a11/}
}