1. The strong chromatic index of a cubic graph is at most 10;Andersen;Discrete Math.,1992
2. M. Bonamy, T. Perrett, L. Postle, Colouring graphs with sparse neighbourhoods: bounds and applications, manuscript.
3. Precise upper bound for the strong edge chromatic number of sparse planar graphs;Borodin;Discuss. Math. Graph Theory,2013
4. A stronger bound for the strong chromatic index;Bruhn;Comb. Probab. Comput.,2017
5. G.J. Chang, G.-H. Duh, On the precise value of the strong chromatic-index of a planar graph with a large girth, 2016, arXiv:1508.03052.