Yllias Chali Shafiq R. Joty Answering Complex Questions Using Query-Focused Summarization Technique. 131-134 2008 ICTAI (2) http://dx.doi.org/10.1109/ICTAI.2008.84 conf/ictai/2008-2 db/conf/ictai/ictai2008-2.html#ChaliJ08a