@book{Katus2008a,
author = "Katus, K. and Puur, A. and Põldma, A.",
title = "Estonian family and fertility survey, 2nd round. Standard tabulations",
year = 2008,
publisher = "Eesti Korgkooolidevaheline Demouuringute Keskus",
institution = "EKDK",
number = 26,
url = "https://www.raamatukoi.ee/cgi-bin/raamat?192234"
}