(2005-03-29) Mattila, Mikko; Raunio, Tapio; University of Helsinki. Department of Political Science - Mattila, Mikko; University of Tampere. Department of Political Science and International Relations - Raunio, Tapio

(2010-05-28) Fredriksson, Sami; Hyvärinen, Olli; Mattila, Mikko; Wass, Hanna; University of Helsinki. Department of Economics and Political Studies - Fredriksson, Sami; University of Helsinki. Department of Economics and Political Studies - Hyvärinen, Olli; University of Helsinki. Department of Economics and Political Studies - Mattila, Mikko; University of Helsinki. Department of Economics and Political Studies - Wass, Hanna