@inbook{Zakharov2006c,
author = {Zakharov, S.V.},
title= {Age of childbearing},
year = {2006c},
editor = {Vishnevsky, A.},
booktitle = {Demographic Modernization in Russia, 1900-2000},
address = {Moscow},
publisher = {Novoe Izdatelstvo Publishing House},
pages = {176--183},
series = {in Russian},
}