%0 Journal Article
%A Luong Quoc Tuyen
%T A partial answer to a question of Y. Ikeda, C. Liu and Y. Tanaka
%J Novi Sad Journal of Mathematics
%D 2017
%P 63 - 68
%V 47
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.30755/NSJOM.04217/
%R 10.30755/NSJOM.04217
%F 10.30755/NSJOM.04217