http://search.ebscohost.com/login.aspx?direct=true&db=eoh&AN=0927998
"Monetary Union with Voluntary Participation." William Fuchs and Francesco Lippi; Review of Economic Studies, 2006, 73(2), pp. 437-57.http://www.blackwell-synergy.com/doi/abs/10.1111/j.1467-937X.2006.00382.x
Dynamic Contracts; William Fuchs; Ph.D. Dissertation, Stanford University, 2005.http://proquest.umi.com/pqdweb?did=921026231&Fmt=7&clientId=13392&RQT=309&VName=PQD
Monetary Union with Voluntary Participation; William Fuchs and Francesco Lippi; CEPR Discussion Papers: 4122; London: Centre for Economic Policy Research, 2003.