%0 Journal Article %A Heinrich Raubenheimer %A Tshikhudo Lukoto %T Characterisations of the radical in a Banach algebra %J Filomat %D 2023 %P 1449 %V 37 %N 5 %U http://geodesic.mathdoc.fr/articles/10.2298/FIL2305449R/ %R 10.2298/FIL2305449R %G en %F 10_2298_FIL2305449R