Banks' Net Interest Margin and the Level of Interest Rates

Credit and Capital Markets – Kredit und Kapital, Vol. 50 (2017), Iss. 3 : pp. 363–392

What Determines the Interest Margin? An Analysis of the German Banking System

Credit and Capital Markets – Kredit und Kapital, Vol. 46 (2013), Iss. 4 : pp. 467–494

Global Competition, Fee Income and Interest Rate Margins of Banks

Credit and Capital Markets – Kredit und Kapital, Vol. 36 (2003), Iss. 3 : pp. 368–394

The Japanese Banks in the Lasting Low-, Zero- and Negative-Interest Rate Environment

Credit and Capital Markets – Kredit und Kapital, Vol. 54 (2021), Iss. 1 : pp. 1–16

The Impact of the Bank of Japan’s Low-Interest Rate Policy on the Japanese Banking Sector

Credit and Capital Markets – Kredit und Kapital, Vol. 54 (2021), Iss. 4 : pp. 533–562

Eine Neuformulierung der Quantitätstheorie des Geldes

Die Theorie der relativen Preise, des Geldes, des Outputs und der Beschäftigung

Credit and Capital Markets – Kredit und Kapital, Vol. 3 (1970), Iss. 1 : pp. 1–30

Konjunktur und gesetzliche Rentenversicherung

Sozialer Fortschritt, Vol. 58 (2009), Iss. 6 : pp. 129–136