@article{CMUC_1981_22_1_a10,
     author = {Vrbov\'a, Pavla},
     title = {A remark concerning commutativity modulo radical in {Banach} algebras},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {145--148},
     year = {1981},
     volume = {22},
     number = {1},
     mrnumber = {609942},
     zbl = {0471.46032},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_1981_22_1_a10/}
}