European Central Bank (ECB), European Central Bank (ECB), European Central Bank(ECB), European Central Bank (ECB), European Central Bank (ECB), National Bank of Belgium, Deutsche Bundesbank, Münster University of Applied Sciences, Bank of Estonia, Central Bank of Ireland, Bank of Greece, Banco de España, Banque de France, Banque de France, Bank of Italy, Central Bank of Cyprus, Banque Centrale du Luxembourg, Central Bank of Malta, De Nederlandsche Bank, De Nederlandsche Bank, Oesterreichische Nationalbank (OeNB), Bank of Portugal, Goethe University Frankfurt, House of Finance (HoF), Graduate School of Economics, Finance and Management (GSEFM), Students, National Bank of Slovakia, Bank of Finland, Banque de France, Bank of Italy, Bank for International Settlements (BIS) - Monetary and Economic Department, European Central Bank (ECB), European Central Bank (ECB), European Central Bank (ECB) and National Bank of Slovakia