Eduarda Mendes Rodrigues Natasa Milic-Frayling Blaz Fortuna Social Tagging Behaviour in Community-Driven Question Answering. 112-119 2008 Web Intelligence http://dx.doi.org/10.1109/WIIAT.2008.138 conf/webi/2008 db/conf/webi/webi2008.html#RodriguesMF08