@article{Kim:2018kx,
  author = "Kim, Jihn E.",
  title = "{Anomalous gauge-U(1), ’t Hooft mechanism, and “invisible” QCD axion from string}",
  doi = "10.22323/1.318.0202",
  journal = "PoS",
  year = 2018,
  volume = "CORFU2017",
  pages = "202"
}