%0 Journal Article
%A H.J. Shyr
%A C. M. Reis
%T A note on a problem of Hua.
%J Semigroup forum
%D 1977
%P 7-14
%V 14
%I mathdoc
%U http://geodesic.mathdoc.fr/item/SF_1977__14_186380/
%F SF_1977__14_186380