@article{Skopek2011,
author = {Skopek, J. and Schulz, F. and Blossfeld, H.-P.},
title= {Who contacts whom? Educational homophily in online mate selection},
year = {2011},
doi = {10.1093/esr/jcp068},
volume = {27},
number = {2},
pages = {180--195},
}