%0 Journal Article %T A Nondegenerate Penalized Likelihood Estimator for Variance Parameters in Multilevel Models %A Chung, Yeojin %A Rabe-Hesketh, Sophia %A Dorie, Vincent %A Gelman, Andrew %A Liu, Jingchen %J Psychometrika %V 78 %N 4 %P 685-709 %@ 0033-3123 %D 2013-03-12 %I Springer US %~ DeepDyve