6Roberts B,Stimson R J. Multi-Sectoral Qualitative Analy- sis:A Tool for Assessing the Competitiveness of Regions and Formulating Strategies for Economic Development[[].Annals of Re- gional Science, 1998,32( 4 ).
8Donaldson R,Niekerk A V,Plessis D D,et al. Non-metro politan Growth Potential of Western Cape Municipalities[J].Ur- ban Forum, 2012,23(3).
9K101r E. Potential economic variables and actual economic policies in Europe[J].Intereconomics, 2013,48( 1 ).
10Halmai P,Vdsdry V. Convergence crisis:economic crisis and convergence in the European Union[J].Intemafional Econo- mics&Economic Policy, 2012,9(3-4).