@article{Scheipl2008,
author = {Scheipl, F. and Greven, S. and Kuechenhoff, H. },
title= {Size and power of tests for a zero random effect variance or polynomial regression in additive and linear mixed models},
year = {2008},
doi = {10.1016/j.csda.2007.10.022},
journal = {Computational Statistics and Data Analysis },
volume = {52},
number = {7},
pages = {3283--3299},
}