Discover how GGP data supports cutting-edge research and contributes to policy, science, and society.
Participate in GGP activities, connect with others, and explore how to contribute to the community.
Learn more about the GGP's mission, organization, and international collaborations.
@article{Kostova2008,
author = "Kostova, D. and Hoem, J. M.",
title = "Early traces of the second demographic transition in Bulgaria: a joint analysis of marital and non-marital union formation, 1964-2004",
year = 2008,
journal = "Population Studies",
volume = 62,
pages = "259-271"
}