Литература и информационни източници

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  2. сп. Икономика, бр.16, август 2012 г.
  3. Barkley, D., M. Henry, 2001, Advantages and Disadvantages of Targeting Industry Clusters, Clemson University Public Service Activities, REDLR Research Report, 09.2001.01
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  5. Rosenfeld, S.,1997, Bringing Business Clusters into Mainstream of Economic Development, European Planning Studies, 5(1), pp.3-23.
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  7. http://www.manager.bg/news/darzhavata-shte-subsidira-pokupkata-na-elektromobili
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  10. http://ec.europa.eu/enterprise/policies/single-market-goods/cemarking/professionals/index_en.htm
  11. http://ec.europa.eu/bulgaria/abc/faq/european_standards_bg.htm
  12. http://www.vitamina-bg.com/haccp/
  13. http://kostelbg.net/home/node/3810
  14. http://lex.bg/laws/ldoc/2134685185
  15. http://www.rainforest-alliance.org/tourism/verification
  16. http://www.gstcouncil.org/sustainable-tourism-gstc-criteria/gstc-recognized-standards.html
  17. http://www.mrrb.government.bg/index.php?lang=bg&do=law&type=4&id=268
  18. http://ec.europa.eu/civil_service/admin/green/index_bg.htm