Hyun Chul Lee Jian Chang Mao Information Extraction by Embedding HMM to the Set of Induced Linguistic Features. 134-135 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=3246&spage=134 2004 conf/spire/2004 SPIRE db/conf/spire/spire2004.html#LeeM04