%0 Journal Article
%A Majumder, Sujoy
%T Further investigation “On an open problem of Zhang and Xu”
%J Mathematica Bohemica
%D 2018
%P 251-275
%V 143
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.21136/MB.2017.0017-16/
%R 10.21136/MB.2017.0017-16
%G en
%F 10_21136_MB_2017_0017_16