@article{10_37236_9338,
     author = {Yiting Jiang and Xuding Zhu},
     title = {\(4\)-colouring of generalized signed planar graphs},
     journal = {The electronic journal of combinatorics},
     year = {2020},
     volume = {27},
     number = {3},
     doi = {10.37236/9338},
     zbl = {1446.05032},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/9338/}
}