1. Argys, L., Averett, S., & Rees, D. I. (2000). Welfare generosity, pregnancies and abortions among unmarried AFDC recipients. Journal of Population Economics, 13(4), 569–594.
2. Azmat, G., & González, L. (2010). Targeting fertility and female participation through the income tax. Labour Economics, 17(2010), 487–502.
3. Becker, G. S. (1960). An economic analysis of fertility. In U.-N. Bureau (Ed.), Demographic and economic change in developed countries: A conference of the Universities - National Bureau Committee for Economic Research (Vol. 11, pp. 209–231). Princeton University Press.
4. BEEG. (2010). Bundeselterngeld- und Elternzeitgesetz Edition of December 9, 2010. Bundesgesetzblatt Jahrgang 2010 Part 1, 1885 ff.
5. Berrington, A. (2004). Perpetual postponers? Women’s, men’s and couple’s fertility intentions and subsequent fertility behaviour. Population Trends, 117, 9–19.