Dimitris Zisiadis Spyros Kopsidas Matina Tsavli Leandros Tassiulas Leonidas Georgiadis Chrysostomos Tziouvaras Fotis Karayannis Grid Management: Data Model Definition for Trouble Ticket Normalization. 105-112 2008 GridNets http://dx.doi.org/10.1007/978-3-642-02080-3_11 conf/gridnets/2008 db/conf/gridnets/gridnets2008.html#ZisiadisKTTGTK08