%0 Journal Article
%A Chu, Yanan
%A Sun, Lei
%A Yue, Jun
%T Note on improper coloring of $1$-planar graphs
%J Czechoslovak Mathematical Journal
%D 2019
%P 955-968
%V 69
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.21136/CMJ.2019.0558-17/
%R 10.21136/CMJ.2019.0558-17
%G en
%F 10_21136_CMJ_2019_0558_17