Similar title to Lutz, W. ORCID: https://orcid.org/0000-0001-7975-8145, Skirbekk, V., & Testa, M.R. (2006). The low fertility trap hypothesis: Forces that may lead to further postponement and fewer births in Europe. In: Vienna Yearbook of Population Research. pp. 167-192 Vienna, Austria: Verlag der Österreichischen Akademie der Wissenschaften. 10.1553/populationyearbook2006s167.