Understanding mobile contexts. - Sakari Tamminen; Antti Oulasvirta; Kalle Toiskallio; Anu Kankainen (Pers. Ubiquitous Comput., 2004)

Playmakers in multiplayer game communities: their importance and motivations for participation. - Antti Salovaara; Mikael Johnson; Kalle Toiskallio; Sauli Tiitta; Marko Turpeinen (Advances in Computer Entertainment Technology, 2005)