Aleksandra Korolova Rajeev Motwani Shubha U. Nabar Ying Xu 0002 Link Privacy in Social Networks. 1355-1357 2008 ICDE http://dx.doi.org/10.1109/ICDE.2008.4497554 conf/icde/2008 db/conf/icde/icde2008.html#KorolovaMNX08