TY - RPRT A1 - Hoem, J. A1 - Jasilioniene, A. A1 - Kostova, D. A1 - Muresan, C. T1 - The second demographic transition in selected countries in Central and Eastern Europe: Union formation as a demographic manifestation Y1 - 2007 DO - 10.1007/s10680-009-9177-y PB - Max Planck Institute for Demographic Research CY - Rostock IS - Research note ER -