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On the regularity of a graph related to conjugacy class sizes of a normal subgroup. (arXiv:2005.12316v1 [math.GR]) http://arxiv.org/abs/2005.12316
On the regularity of a graph related to conjugacy class sizes of a normal subgroup. (arXiv:2005.12316v1 [math.GR]) http://arxiv.org/abs/2005.12316