CHINESE JOURNAL OF APPLIED PROBABILITY AND STATISTICS     2009 25 (3):  301-308    ISSN: 1001-4268:  CN: 31-1256 / O1 Estimates of Variance Components in Linear Mixed Models with Random Effects Xu Wangli School of Statistics, Renmin University of China Received 1900-01-01  Revised 1900-01-01  Online 2009-05-20 Reference   Corresponding author: Xu Wangli