Vivian Zhanwei Yue University of Pennsylvania   3718 Locust Walk RM 160 Philadelphia, PA 19104 USA   yuez@econ.upenn.edu   http://www.econ.upenn.edu/~yuez       Primary Research Focus: International economics, currently sovereign default and sovereign bond market   JEL Areas: F0 : International Economics: General E0 : Macroeconomics and Monetary Economics: General