In the 1960s and 1970s, Salin was influenced by
Milton Friedman and monetarism,
Jacques Rueff and his view of the international monetary order, as well as
Harry Gordon Johnson and his monetary approach to the balance of payments.
Robert Mundell's work also played a part in Salin's own approach to economics, especially regarding the topics of
supply-side economics and
optimum currency areas. Salin aided in awarding Mundell the degree of
Doctor Honoris Causa from the Université de Paris-Dauphine in 1992. Salin and his colleague, Emil-Maria Claassen, contributed to the European research on these subjects throughout the 1960s and 1970s. Salin later became interested in the Austrian school of economics. In addition to
Friedrich Hayek, who was one of Salin's intellectual mentors, Salin has been influenced by the works of
Frédéric Bastiat,
Israel Kirzner,
Ludwig von Mises,
Murray Rothbard, and
Jean-Baptiste Say. Salin opposes
full-reserve banking and supports unregulated
free banking and fractional reserves. He rejects the theory of
John Maynard Keynes and sees it as an aberration in the evolution of economic ideas. == Selected bibliography ==