Yanzhu
Chen
Chen, Y., Huang, S.-J., Hsu, Y.-T., & Wei, T.-C. (2022). Topological invariants beyond symmetry indicators: Boundary diagnostics for twofold rotationally symmetric superconductors. Physical Review B, 105(9). http://doi.org/10.1103/physrevb.105.094518 (Original work published March 2022)