%0 Journal Article %A Willy G. van Hoorn %T Some Generalisations of the Jacobson Radical for Seminearrings and Semirings. %J Mathematische Zeitschrift %D 1970 %P 69-82 %V 118 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZ_1970__118_171440/ %F MZ_1970__118_171440