@article{van Dalen2005,
author = {van Dalen, H.P. and Groenewold, G. and Schoorl, J.J.},
title= {Out of Africa: What drives the pressure to emigrate?},
year = {2005},
doi = {10.1007/s00148-005-0003-5},
journal = {Journal of Population Economics},
volume = {18},
number = {4},
pages = {741‒778},
}