Wagner, M.: The Porter Hypothesis Revisited. A Literatur Review of Theoretical Model and Empirical Test. Lüneburg: Centre for Sustainability Management, 2003, p.2 CSM Lüneburg [Архівовано 4 березня 2016 у Wayback Machine.]
web.archive.org
Wagner, M.: The Porter Hypothesis Revisited. A Literatur Review of Theoretical Model and Empirical Test. Lüneburg: Centre for Sustainability Management, 2003, p.2 CSM Lüneburg [Архівовано 4 березня 2016 у Wayback Machine.]
Chemicals Regulation and the Porter Hypothesis: A Critical Review of the New European Chemicals Regulation Torsten Frohwein, Bernd Hansjürgens Journal of Business Chemistry January 2005 [1] [Архівовано 3 березня 2016 у Wayback Machine.]
wirtschaftschemie.de
Chemicals Regulation and the Porter Hypothesis: A Critical Review of the New European Chemicals Regulation Torsten Frohwein, Bernd Hansjürgens Journal of Business Chemistry January 2005 [1] [Архівовано 3 березня 2016 у Wayback Machine.]
