@book {20133, title = {Currency Unions}, year = {2001}, publisher = {Hoover Institution Press}, organization = {Hoover Institution Press}, url = {http://www.amazon.com/Currency-Unions-HOOVER-PRESS-PUBLICATION/dp/0817928421/ref=sr_1_3?s=books\&ie=UTF8\&qid=1311954282\&sr=1-3}, editor = {Robert Barro and A. Alesina} }