Xuming Huang Chengming Liu LiMing Zhang Study on Object Recognition Based on Independent Component Analysis. 720-725 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=3173&spage=720 2004 conf/isnn/2004-1 ISNN (1) db/conf/isnn/isnn2004-1.html#HuangLZ04