@article{10_4064_sm_93_1_87_95,
     author = {Vladim{\'\i}r M\"uller and Andrzej So{\l}tysiak},
     title = {Spectrum of generators of a noncommutative {Banach} algebra},
     journal = {Studia Mathematica},
     pages = {87--95},
     publisher = {mathdoc},
     volume = {93},
     number = {1},
     year = {1989},
     doi = {10.4064/sm-93-1-87-95},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm-93-1-87-95/}
}