@article{Hammer2015,
author = {Hammer, B. and Prskawetz, A. and Freund, I.},
title= {Production activities and economic dependency by age and gender in Europe: A cross-country comparison},
year = {2015},
doi = {10.1016/j.jeoa.2014.09.007},
volume = {5},
number = {86–97},
}