@inbook{Cunha2006,
author = {Cunha, F. and Heckman, J.J. and Lochner, L. and Masterov, D.V.},
title= {Interpreting the evidence on life cycle skill formation},
year = {2006},
doi = {10.1016/S1574-0692(06)01012-9},
booktitle = {Handbook of the economics of education},
address = {Amsterdam},
publisher = {Elsevier},
pages = {697--812},
}