%0 Journal Article
%A N. Kehayopulu
%A I. S. Ponizovskii
%A M. Tsingelis
%T Note on bi-ideals in ordered semigroups and in ordered groups
%J Zapiski Nauchnykh Seminarov POMI
%D 1999
%P 198-201
%V 265
%I mathdoc
%U http://geodesic.mathdoc.fr/item/ZNSL_1999_265_a13/
%G en
%F ZNSL_1999_265_a13