Lewandowski, S. (1996) “Zur Bestimmung eines familienpolitischen Grenznutzens: eine Kritik am 5. Familienbericht: Determination of a marginal family policy utility - a criticism of the 5th Family Report ”, Journal of Family Research, 8(2), pp. p. 43–51. Available at: https://ubp.uni-bamberg.de/jfr/index.php/jfr/article/view/560 (Accessed: 23 June 2024).