%0 Journal Article
%A N. Hindman
%T The minimal ideals of a multiplicative and additive subsemigroup of ßN.
%J Semigroup forum
%D 1985
%P 283-292
%V 32
%I mathdoc
%U http://geodesic.mathdoc.fr/item/SF_1985__32_134787/
%F SF_1985__32_134787