TY - JOUR A1 - Kohler, H.-P. A1 - Billari, F. A1 - Ortega, J.A. T1 - Towards a theory of lowest-low fertility Y1 - 2002 DO - 10.1111/j.1728-4457.2002.00641.x JF - Population and Development Review VL - 28 IS - 4 SP - 641 EP - -680 ER -