Dear all, just to let you know that professor Richard A. Musgrave passed away on January 15th, 2007, in Santa Cruz, California. He was 96. Greg Mankiw has posted a link to the obituary published by the New York times on Jan. 20th in his blog http://gregmankiw.blogspot.com/2007/01/richard-musgrave.html Best, Pedro G. Duarte