City of Belgrade, Serbia

European Centre of Byzantine and Post-Byzantine Monuments, Greece

Hellenic Ministry for Foreign Affaires (General Secretariat of International Economic Relations and Development Cooperation „Hellenic Aid“), Greece

Hellenic Parliament, Greece

Hellenic Ministry of Culture and Turism, Greece

Public Enterprise „Belgrade Fortress“, Serbia

Institute for Protection of Cultural Monuments of Serbia

Arhitectural Faculty University of Belgrade, Serbia

Archaeological Institute, Serbian Academy of Sciences and Arts (SANU), Serbia

Alpha MENTOR L.T.D, Greece

Altervision S.A, Greece

Octanorm Hellas S.A, Greece

GP КОТО, Serbia