TY - JOUR A1 - Liefbroer, A.C. A1 - Dourlejin, E. T1 - Unmarried Cohabitation and Union Stability: Testing the Role of Diffusion Using Data From 16 European Countries Y1 - 2006 JF - Demography VL - 43 IS - 2 SP - 203 EP - -221 ER -