@article{10_4064_cm_63_1_135_137,
     author = {W. \.Zelazko},
     title = {A subfield of a complex {Banach} algebra is not necessarily topologically isomorphic to a subfield of {\ensuremath{\mathbb{C}}}},
     journal = {Colloquium Mathematicum},
     pages = {135--137},
     publisher = {mathdoc},
     volume = {63},
     number = {1},
     year = {1992},
     doi = {10.4064/cm-63-1-135-137},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm-63-1-135-137/}
}