Gad Kimmel Roded Sharan Ron Shamir Identifying Blocks and Sub-populations in Noisy SNP Data. 303-319 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=2812&spage=303 2003 conf/wabi/2003 WABI db/conf/wabi/wabi2003.html#KimmelSS03