@article{Voorpostel2009,
author = {Voorpostel, M. and van der Lippe, T. and Gershuny, J.},
title= {Trends in free time with a partner: A transformation of intimacy?},
year = {2009},
doi = {10.1007/s11205-008-9383-8},
volume = {93},
number = {1},
pages = {165--169},
}