TY - JOUR A1 - Van Groezen, B. A1 - Leers, T. A1 - Meijdam, L. T1 - Social security and endogenous fertility: Pensions and child allowances as Siamese twins Y1 - 2003 DO - 10.1016/S0047-2727(01)00134-7 JF - Journal of Public Economics VL - 87 IS - 2 ER -