Greece
Aktor S.A.
ALSTOM Transport S.A.
Anatolia College
Athens International Airport S.A.
Attica Region
Attiko Metro S.A.
Avax S.A.
Egnatia Odos S.A.
ERGA O.S.E. S.A.
Fraport Greece S.A.
Hellenic Civil Aviation Authority
Hellenic Organization for Standardization S.A.
Hellenic Public Properties Company S.A.
Intrakat S.A.
ISAP S.A.
J&P Avax
Ministry of Environment and Energy
Ministry of Infrastructure and Transport
Ministry of National Defence
North Aegean Region
O.S.E. S.A.
Open University of Greece
TERNA S.A.
University of Patras
Europe (other), Africa, Asia
Albanian Railways
Dubai Electricity & Water Authority
Federal Foreign Office of Germany
Federal Office for Buildings and Regional Planning of Germany
General Directorate of Civil Aviation of Kuwait
Jerusalem Transport Masterplan Team
Ministry of National Defence
KanAm Grund Kapitalanlagegesellschaft mbH
Kosovo Railways Infrastructure
Moldovan Roads Agency
Public Enterprise for Railway Infrastructure of North Macedonia
Roads Agency of North Macedonia
Yapi Merkazi S.A.