TY - CONF A1 - Plantikow, Stefan A1 - Högqvist, Mikael T1 - Continous Queries over Federated Social Networks T2 - Fourth Doctoral Workshop on Mathematical and Engineering Methods in Computer Science (MEMICS 2008) Y1 - 2008 UR - https://opus4.kobv.de/opus4-zib/frontdoor/index/index/docId/3473 CY - Znojmo, Czech Republic ER -