TY - JOUR A1 - Rønsen, M. A1 - Skrede, K. T1 - Fertility trends and differentials in the Nordic countries – Footprints of welfare policies and challenges on the road ahead Y1 - 2008 DO - 10.1553/populationyearbook2008s103 JF - Vienna Yearbook of Population Research VL - 2008 ER -