@inbook{van den Berg2001,
author = {van den Berg, G.J.},
title= {Duration models: Specification, identification and multiple durations},
year = {2001},
doi = {10.1016/S1573-4412(01)05008-5},
editor = {Heckman, J.},
editor = {Leamer, E.},
booktitle = {Handbook of econometrics},
address = {Amsterdam},
publisher = {Elsevier},
pages = {3381--3460},
}