bills of exchange cash coexistence puzzle David Andolfatto Larry White legal restrictions hypothesis microfoundations Neil Wallace new monetarism Stephen Williamson Deep money, the coexistence puzzle, and the legal restrictions hypothesis Ridwan X
counting money Divisia Milton Friedman moneyness new monetarism Stephen Williamson William Barnett Milton Friedman and moneyness Ridwan X
bills of exchange David Andolfatto medium of exchange new monetarism search theory of money The root of all money Ridwan X
