@article{AA_2007_19_2_a0,
     author = {V. A. Bovdi and S. Siciliano},
     title = {Normality in group rings},
     journal = {Algebra i analiz},
     pages = {1--9},
     publisher = {mathdoc},
     volume = {19},
     number = {2},
     year = {2007},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/AA_2007_19_2_a0/}
}