国内会議(査読付き): [1] Chakkrit Tantithamthavorn, Papon Yongpisanpop, Patanamon Thongtanunam, Masao Ohira, Arnon Rungsawang, and Ken-ichi Matsumoto, "Chordbook: a System That Support Collaborative Guitar Chord Sharing," In In The Groupware & Network Service Workshop, November 2011.