1. Department of Economics Eastern Mediterranean University, Turkish Republic of Northern Cyprus Via Mersin 10 Famagusta 99628 Turkey
2. Department of Economics OSTIM Technical University Ankara 06374 Turkey
3. Data Analysis Systems Software Competence Center Hagenberg Hagenberg Austria
4. Department of Economics University of Pretoria Private Bag X20 Hatfield 0028 South Africa
5. Department of Economics Helmut Schmidt University Holstenhofweg 85, PO Box 700822 Hamburg 22008 Germany