Kaufmann, Ralph M. Max Planck Institute for Mathematics, Max Planck Society;
https://doi.org/10.1016/j.geomphys.2020.103892 (Publisher version)
1807.05751.pdf (Preprint), 488KB
Kaufmann, R. M., Khlebnikov, S., & Wehefritz-Kaufmann, B. (2020). Local models and global constraints for degeneracies and band crossings. Journal of Geometry and Physics, 158: 103892. doi:10.1016/j.geomphys.2020.103892.