%0 Journal Article
%A Xie, T. F.
%A Zhou, S. P.
%T A Remark on a Paper of Walter and Zayed
%J Canadian mathematical bulletin
%D 1991
%P 281-285
%V 34
%N 2
%U http://geodesic.mathdoc.fr/articles/10.4153/CMB-1991-045-8/
%R 10.4153/CMB-1991-045-8
%F 10_4153_CMB_1991_045_8