Apostolos Axenopoulos Petros Daras Sotiris Malassiotis Vincenzo Croce Marilena Lazzaro Jonas Etzold Paul Grimm Alberto Massari Antonio Camurri Thomas Steiner Dimitrios Tzovaras I-SEARCH: A Unified Framework for Multimodal Search and Retrieval. 130-141 2012 Future Internet Assembly http://dx.doi.org/10.1007/978-3-642-30241-1_12 conf/fia/2012 db/conf/fia/fia2012.html#AxenopoulosDMCLEGMCST12