Julio Gonzalo Paul Clough Jussi Karlgren Overview of iCLEF 2008: Search Log Analysis for Multilingual Image Retrieval. 227-235 2008 CLEF http://dx.doi.org/10.1007/978-3-642-04447-2_29 conf/clef/2008 db/conf/clef/clef2008.html#GonzaloCK08