TY - JOUR A1 - Raab, M. A1 - Fasang, A.E. A1 - Karhula, A. A1 - Erola, J. T1 - Sibling similarity in family formation Y1 - 2014 DO - 10.1007/s13524-014-0341-6 JF - Demography VL - 51 IS - 6 ER -