TY - RPRT A1 - Perelli-Harris, B. A1 - Kreyenfeld, M. A1 - Sigle-Rushton, W. A1 - Keizer, R. A1 - Lappegard, T. A1 - Jasilioniene, A. A1 - Berghammer, C. A1 - Di Giulio, P. A1 - Koeppen, K. T1 - The increase in fertility in cohabitation across Europe: Examining the intersection between union status and childbearing. MPIDR Working Paper 2009-021 Y1 - 2009 ER -