Frejka, Tomas; Sardon, Jean-Paul - In: Demographic Research 15 (2006) 6, pp. 147-180
Levels and trends of various facets concerning first births are continuously changing. The evidence confirms that the postponement of first births is an ongoing and persisting process which started in western countries among cohorts of the 1940s, but only in the 1960s cohorts in Central and...
