%0 Journal Article
%A Tuyen, Luong Quoc
%T On an affirmative answer to Y.  Tanaka's and Y. Ge's problem
%J Commentationes Mathematicae Universitatis Carolinae
%D 2017
%P 125-129
%V 58
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.14712/1213-7243.2015.175/
%R 10.14712/1213-7243.2015.175
%G en
%F 10_14712_1213_7243_2015_175