@article{Lutz2006, author = {Lutz, W. and Skirbekk, V. and Testa, M.R.}, title= {The low fertility trap hypothesis: Forces that may lead to further postponement and fewer births in Europe}, year = {2006}, URL = {http://hw.oeaw.ac.at/0xc1aa500d_0x00144e25}, journal = {Vienna Yearbook of Population Research}, volume = {2006}, pages = {167--192}, }