@article{Liefbroer2010,
author = {Liefbroer, A.C. and Billari, F.C.},
title= {Bringing norms back in: a theoretical and empirical discussion of their importance for understanding demographic behaviour},
year = {2010},
doi = {10.1002/psp.552},
journal = {Population, Space and Place},
volume = {16},
number = {4},
pages = {287--305},
}