@article{10_21136_CPM_1966_108111,
     author = {Pt\'ak, Vlastimil},
     title = {O existenci spektra v {Banachov\'ych} algebr\'ach},
     journal = {\v{C}asopis pro p\v{e}stov\'an{\'\i} matematiky},
     pages = {146--153},
     publisher = {mathdoc},
     volume = {091},
     number = {2},
     year = {1966},
     doi = {10.21136/CPM.1966.108111},
     mrnumber = {0196513},
     zbl = {0178.49202},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CPM.1966.108111/}
}