%0 Journal Article
%A Yiting Jiang
%A Xuding Zhu
%T \(4\)-colouring of generalized signed planar graphs
%J The electronic journal of combinatorics
%D 2020
%V 27
%N 3
%U http://geodesic.mathdoc.fr/articles/10.37236/9338/
%R 10.37236/9338
%F 10_37236_9338