Valentina Ciriani Sabrina De Capitani di Vimercati Sara Foresti Sushil Jajodia Stefano Paraboschi Pierangela Samarati Fragmentation Design for Efficient Query Execution over Sensitive Distributed Databases. 32-39 2009 ICDCS http://dx.doi.org/10.1109/ICDCS.2009.52 conf/icdcs/2009 db/conf/icdcs/icdcs2009.html#CirianiVFJPS09