TY - JOUR A1 - Goldstein, J.R. A1 - Sobotka, T. A1 - Jasilioniene, A. T1 - Tempo effects, postponement transitions, and the duration of lowest-low fertility Y1 - 2009 DO - 10.1111/j.1728-4457.2009.00304.x JF - Population and Development Review VL - 35 IS - 4 ER -