@article{de Valk2014,
author = {de Valk, H.A.G. and Medrano, J.D.},
title= {Guest editorial on meeting and mating across borders: Union formation in the European Union single market},
year = {2014},
doi = {10.1002/psp.1768},
journal = {Population, Space and Place},
volume = {20},
number = {2},
pages = {103−109},
}