Brahim Djioua Jean-Pierre Desclés Indexing Documents by Discourse and Semantic Contents from Automatic Annotations of Texts. 356-361 2007 conf/flairs/2007 FLAIRS Conference db/conf/flairs/flairs2007.html#DjiouaD07 http://www.aaai.org/Library/FLAIRS/2007/flairs07-072.php