@article{Wrzus2013,
author = {Wrzus, C. and Hänel, M. and Wagner, J. and Neyer, F.J.},
title= {Social network changes and life events across the life span: A meta-analysis},
year = {2013},
journal = {Psychological Bulletin},
volume = {139},
number = {1},
pages = {53--80},
}