TY - JOUR A1 - Brons, M.D.A. A1 - Liefbroer, A.C. A1 - Ganzeboom, H.B.G. T1 - Parental socio-economic status and first union formation: Can European variation be explained by the Second demographic transition theory? Y1 - 2017 DO - 10.1093/esr/jcx078 VL - 33 IS - 6 ER -