First Author:   Theofanis Tsoulouhas North Carolina State University fanis_tsoulouhas@ncsu.edu   Department of economics, Box 8110 Raleigh, 27695, USA   919-513-2661(Phone) 919-513-2661(Fax) http://tsoulouhas.info Second Author: Theofanis Tsoulouhas North Carolina State University fanis_tsoulouhas@ncsu.edu   Department of Economics, Box 8110 Raleigh, 27695, USA   919-513-2661(Phone)