@inbook{Snijders2008,
author = {Snijders, T.A.B. and Berkhof, J.},
title= {Diagnostic checks for multilevel models},
year = {2008},
doi = {10.1007/978-0-387-73186-5_3},
editor = {De Leeuw, J.},
editor = {Meijer, E.},
booktitle = {Handbook of Multilevel Analysis},
address = {Thousand Oaks},
publisher = {Sage},
pages = {141--175},
}