Religion and religiousness in Russia is a research series carried out by the Academy of Finland and the Russian Academy of Sciences. In Russia, the data were collected by Institut sravnitel'nyh social'nyh issledovanij (Institute for Comparative Social Research), and in Finland by the Research Institute of the Evangelical Lutheran Church of Finland. The surveys were carried out in 1991, 1993, 1996 and 1999, and are included in the FSD collections.