Jukola: democratic music choice in a public space. - Kenton O'Hara; Matthew Lipson; Marcel Jansen; Axel Unger; Huw Jeffries; Peter James Macer (Conference on Designing Interactive Systems, 2004)

TxtBoard: from text-to-person to text-to-home. - Kenton O'Hara; Richard H. R. Harper; Axel Unger; James Wilkes; Bill Sharpe; Marcel Jansen (CHI Extended Abstracts, 2005)