%0 Journal Article %A J. Welnert %T Seminearrings, seminearfields and their semigroup-theoretical background. %J Semigroup forum %D 1982 %P 231-254 %V 24 %I mathdoc %U http://geodesic.mathdoc.fr/item/SF_1982__24_134549/ %F SF_1982__24_134549