Economista (Wiener Neustadt 1902 - New York 1983), negli USA dal 1933, prof. nella univ. di Buffalo (1935-47), nella Johns Hopkins (dal 1947 al 1960) e quindi a Princeton. Socio straniero dei Lincei dal 1974. Opere principali: Borsenkredit, Industriekredit und Kapitalbildung (1931); The stock market (1940); International trade and the national income multiplier (1943); The economics of sellers' competition (1952); Essays on economic semantics (1963, 2a ed. 1967); Plans for reform of the international monetary system (1964); World monetary debate (1966); International monetary systems and the free market economy (1966); International monetary economics (1966); Remaking the international monetary system (1968); International monetary system (1975); A history of thought on economic integration (1977).