Urine computer interaction to avoid spattering: study of urination handling. - Katsufumi Matsui; Kazunori Ogasawara; Emi Tamaki; Ken Iwasaki (AH, 2013)

ForceStamps: Fiducial Markers for Pressure-sensitive Touch Surfaces to Support Rapid Prototyping of Physical Control Interfaces. - Changyo Han; Katsufumi Matsui; Takeshi Naemura (TEI, 2020)

EmoBalloon - Conveying Emotional Arousal in Text Chats with Speech Balloons. - Toshiki Aoki; Rintaro Chujo; Katsufumi Matsui; Saemi Choi; Ari Hautasaari (CHI, 2022)