Κύριλλος και Μεθόδιος: Παρακαταθήκες πολιτισμού, Proceedings of an international conference: "The cultural heritage of the work of Saints Cyril and Methodius as a factor of unity with the peoples of S.E. "Integration of the N.E. Europe" (Amyndeon 21-22 May 2010) (Amyndeo, 21-22 May 2010)