Non-standard Uses of PIRIKA: Pilot of the Right Knowledge and Argument. - Yutaka Oomidou; Hajime Sawamura; Takeshi Hagiwara; Jacques Riche (PRIMA, 2013)

Asynchronous Argumentation System PIRIKA for Anyone, Anytime, Anywhere, with the Balanced Semantics. - Yutaka Oomidou; Yuki Katsura; Hajime Sawamura; Jacques Riche; Takeshi Hagiwara (COMMA, 2014)

Balanced Semantics for Argumentation based on Heider's Socio-Psychological Balance Theory. - Hajime Sawamura; Jacques Riche; Yutaka Oomidou; Takeshi Hagiwara (COMMA, 2014)