@article{Holzer-Żelażewska2009,
author = {Holzer-Żelażewska, D.  and Tymicki, K. },
title= {Cohort and period fertility of Polish women, 1945–2008},
year = {2009},
journal = {Studia Demograficzne},
volume = {155},
number = {1},
pages = {48--69},
}