%0 Journal Article
%A Tang, Wee-Kee
%T A Note on Preserved Smoothness
%J Serdica Mathematical Journal
%D 1996
%P 29-32
%V 22
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/SMJ2_1996_22_1_a2/
%G en
%F SMJ2_1996_22_1_a2