@article{CMUC_1982__23_2_a10,
     author = {M\"uller, Vladim{\'\i}r},
     title = {A note on the joint spectrum in commutative {Banach} algebras},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {351--354},
     publisher = {mathdoc},
     volume = {23},
     number = {2},
     year = {1982},
     mrnumber = {664979},
     zbl = {0503.46038},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_1982__23_2_a10/}
}