@article{Nisén2014,
author = {Nisén, J. and Martikainen, P. and Silventoinen, K. and Myrskylä, M.},
title= {Age-specific fertility by educational level in the Finnish male cohort born 1940‒1950},
year = {2014},
doi = {10.4054/DemRes.2014.31.5},
volume = {31},
number = {5},
pages = {119--136},
}