Credit and Capital Markets – Kredit und Kapital, Vol. 54 (2021), Iss. 3 : pp. 447–467
Sozialer Fortschritt, Vol. 58 (2009), Iss. 7 : pp. 137–147
Credit and Capital Markets – Kredit und Kapital, Vol. 4 (1971), Iss. 3 : pp. 243–263