https://www.mckinsey.com/~/media/McKinsey/Business%20Functions/Strategy%20and%20Corporate%20Finance/Our%20Insights/The%20value%20of%20value%20creation/The-value-of-value-creation.pdf
https://www.socialeurope.eu/reform-of-eu-fiscal-rules-more-ambition-needed
https://www.oecd-ilibrary.org/docserver/9789264293083-en.pdf?expires=1529901663&id=id&accname=guest&checksum=4A5E0B0C79A72EF7A887DDB0119B4594