@inproceedings{Suyama:2019GL,
  author = "Suyama, Takao",
  title = "{$\theta=\pi$ in $SU(N)/Z_N$ Theory}",
  doi = "10.22323/1.340.0619",
  booktitle = "Proceedings of The 39th International Conference on High Energy Physics {\textemdash} PoS(ICHEP2018)",
  year = 2019,
  volume = "340",
  pages = "619"
}