@techreport{Sobotka2015,
author = {Sobotka, T. and Zeman, K. and Potančoková, M. and Eder, J. and Brzozowska, Z. and Beaujouan, É. and Matysiak, A.},
title= {European Fertility Datasheet 2015},
year = {2015},
URL = {http://fertilitydatasheet.org/},
}