@inproceedings{Mitthumsiri:201645, author = "Mitthumsiri, Warit and Seripienlert, Achara and Ruffolo, David and Mangeard, Pierre-Simon and Saiz, A. and Tortermpun, Usanee", title = "{Simulations of Polar-Region Atmospheric Ionization Induced by the Ground Level Enhancement of January 20, 2005 }", doi = "10.22323/1.236.0196", booktitle = "Proceedings of The 34th International Cosmic Ray Conference {\textemdash} PoS(ICRC2015)", year = 2016, volume = "236", pages = "196" }