@article{Machin2012,
author = {Machin, S. and Salvanes, K.G. and Pelkonen, P.},
title= {Education and mobility},
year = {2012},
doi = {10.1111/j.1542-4774.2011.01048.x},
volume = {10},
number = {2},
pages = {417--450},
}