@inbook{Field2005,
author = {Field, A.P.},
title= {Intraclass correlation},
year = {2005},
doi = {10.1002/0470013192.bsa313},
editor = {Everitt, B.S.},
editor = {Howell, D.C.},
booktitle = {Encyclopedia of statistics in behavioral science},
address = {Chichester},
publisher = {John Wiley and Sons},
pages = {948--954},
}