@article{MAN_1973__205_162497,
     author = {Jan-Erik Bj\"ork},
     title = {Compact {Groups} {Operating} on {Banach} {Algebras.}},
     journal = {Mathematische Annalen},
     pages = {281--298},
     publisher = {mathdoc},
     volume = {205},
     year = {1973},
     zbl = {0262.46051},
     url = {http://geodesic.mathdoc.fr/item/MAN_1973__205_162497/}
}