@inproceedings{Naka:2009US, author = "Naka, Tatsuhiro", title = "{Directional Dark Matter Search with Nuclear Emulsion }", doi = "10.22323/1.064.0004", booktitle = "Proceedings of Identification of dark matter 2008 {\textemdash} PoS(idm2008)", year = 2009, volume = "064", pages = "004" }