Designing personalized curricula based on student preferences. - Periklis Georgiadis; Vassilis Christophides; Nicolas Spyratos (SIGDOC, 2007)

Efficient Rewriting Algorithms for Preference Queries. - Periklis Georgiadis; Ioannis Kapantaidakis; Vassilis Christophides; Elhadji Mamadou Nguer; Nicolas Spyratos (ICDE, 2008)