Collaborative discovering of key ideas in knowledge building. - Teemu Leinonen; Otso Virtanen; Kai Hakkarainen; Giedre Kligyte (CSCL, 2002)

Question Answering System for Incomplete and Noisy Data. - Lili Aunimo; Oskari Heinonen; Reeta Kuuskoski; Juha Makkonen; Renaud Petit; Otso Virtanen (ECIR, 2003)