<secondary-title/> </titles> <pages/> <volume/> <number/> <keywords> <keyword>Privacy</keyword> <keyword>Web search engines</keyword> <keyword>Query logs</keyword> <keyword>K-anonymity</keyword> <keyword>Microaggregation</keyword> <keyword>Semantic</keyword> </keywords> <dates> <year/> <pub-dates> <date>2011</date> </pub-dates> </dates> <abstract/> </record> </records> </xml>

Erola, Arnau Castellà-Roca, Jordi Navarro-Arribas, Guillermo Torra, Vicenç <secondary-title/> </titles> <pages/> <volume/> <number/> <keywords> <keyword>Privacy</keyword> <keyword>Web search engines</keyword> <keyword>Query logs</keyword> <keyword>K-anonymity</keyword> <keyword>Microaggregation</keyword> <keyword>Semantic</keyword> </keywords> <dates> <year/> <pub-dates> <date>2011</date> </pub-dates> </dates> <abstract/> </record> </records> </xml>