[1] Deutsch Bundesbank, Res Ctr, Frankfurt, Germany
[2] Halle Inst Econ Res, Halle, Saale, Germany
[3] Leibniz Assoc, Dept Struct Change & Prod, Halle, Saale, Germany
[4] Leibniz Assoc, Ctr Evidence Based Policy Consulting, Halle, Saale, Germany
[5] Martin Luther Univ Halle Wittenberg, Fac Law & Econ, Halle, Saale, Germany
[6] Martin Luther Univ Halle Wittenberg, Ctr Econ Mat, Halle, Saale, Germany
[7] Fraunhofer Inst Microstruct Mat & Mat, Halle, Saale, Germany
[8] Univ Int Business & Econ UIBE, Beijing, Peoples R China