@inproceedings{Matsui:2019mN,
  author = "Matsui, Toshinori",
  title = "{Gravitational waves from first order electroweak phase transition in models with the $U(1)_X$ gauge symmetry}",
  doi = "10.22323/1.340.0315",
  booktitle = "Proceedings of The 39th International Conference on High Energy Physics {\textemdash} PoS(ICHEP2018)",
  year = 2019,
  volume = "340",
  pages = "315"
}