DNS/ hostmaster architecture for the greek network of health and welfare services CTI Technical Report 2001/04/03 - Λάμψας, Π.; Βαγγελάτος, Αριστείδης; Παπανικολάου, Χρήστος; Σοφοτάσιος, Δημήτριος Π.; Μανωλόπουλος, Χρήστος (CTI, 2001)