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@article{PIM_1961_N_S_01_15_a0, author = {Svetozar Kurepa}, title = {On {Roots} {Of} {An} {Element} {Of} {A} {Banach} {Algebra}}, journal = {Publications de l'Institut Math\'ematique}, pages = {5 }, publisher = {mathdoc}, volume = {_N_S_01}, number = {15}, year = {1961}, url = {http://geodesic.mathdoc.fr/item/PIM_1961_N_S_01_15_a0/} }
Svetozar Kurepa. On Roots Of An Element Of A Banach Algebra. Publications de l'Institut Mathématique, _N_S_01 (1961) no. 15, p. 5 . http://geodesic.mathdoc.fr/item/PIM_1961_N_S_01_15_a0/