@article{Billari2009,
author = "Billari, F., Philipov D. Testa M. R.",
title = "Attitudes, norms and perceived behavioral control: explaining fertility intentions in Bulgaria",
year = 2009,
journal = "European Journal of Population",
volume = 25,
pages = "439-465",
url = "http://link.springer.com/article/10.1007%2Fs10680-009-9187-9?LI=true"
}