TY - JOUR A1 - Cigno, A. A1 - Luporini, A. A1 - Pettini, A. T1 - Hidden information problems in the design of family allowances Y1 - 2004 DO - 10.1007/s00148-003-0169-7 JF - Journal of Population Economics VL - 17 IS - 4 SP - 645 EP - -655 ER -