Agiou Symeôn archiepiskopou Thessalonikès / David Balfour, Thessalonique, 1981
http://www.ascsa.edu.gr/index.php/archives/Gennadius-Archival-Collections#DavidBalfour
Information trouvée : David Balfour was a priest-monk in the Russian Orthodox Church, a member of the British
Intelligence Service, a diplomat, and a Byzantine scholar.