%0 Conference Paper %B Proceedings of the 12th International Conference on Extending Database Technology: Advances in Database Technology %D 2009 %T Flexible and efficient querying and ranking on hyperlinked data sources %A Varadarajan,R. %A Hristidis,V. %A Raschid, Louiqa %A Vidal,M. E %A Ibá\ nez,L. %A Rodríguez-Drumond,H. %B Proceedings of the 12th International Conference on Extending Database Technology: Advances in Database Technology %P 553 - 564 %8 2009/// %G eng