Kogan, Eugene Max Planck Institute for the Physics of Complex Systems, Max Planck Society;
https://arxiv.org/pdf/2009.02356.pdf (プレプリント)
Kogan, E., & Silkin, V. M. (2021). Symmetry of Electron Bands in Graphene: (Nearly) Free Electron Versus Tight-Binding. Physica Status Solidi B, 258(3):. doi:10.1002/pssb.202000504.