One more paper on CER which i submitted in MNE conference. You can see the details in given link http://www.wangpengfei.freetcp.com/science?_ob=MImg&_imagekey=B6V0W-524WDXN-2-1&_cdi=5657&_user=4861547&_pii=S0167931711001110&_origin=browse&_zone=rslt_list_item&_coverDate=02%2F10%2F2011&_sk=999999999&wchp=dGLbVtz-zSkWA&_valck