@inproceedings{PARK:2014Pe, author = "PARK, Wan-il", title = "{A portal extension of the standard model with an unbroken local dark U(1)}", doi = "10.22323/1.180.0043", booktitle = "Proceedings of The European Physical Society Conference on High Energy Physics {\textemdash} PoS(EPS-HEP 2013)", year = 2014, volume = "180", pages = "043" }