Dirk T.G. Rübbelke Chemnitz University of Technology   Junior Professorship of European Economics Department of Economics Chemnitz University of Technology Chemnitz, Saxony 09107 Germany   dirk.ruebbelke@wirtschaft.tu-chemnitz.de   http://www.tu-chemnitz.de/wirtschaft/ewi/eng/ma/dru.php           JEL Areas: H0 : Public Economics: General Q0 : Agricultural and Natural Resource Economics; Environmental and Ecological Economics: General