1. World Economic Forum: Towards the Circular Economy: Accelerating the Scale-up Across Global Supply Chains. Switzerland, Geneva (2014)
2. European Commission (02.03.2016) https://kumu.io/ellenmacarthurfoundation/educational-resources#circular-economy-educational-resources/key-for-general-resources-map/intro-to-the-circular-economy
3. EU Environment: Taking Europe closer to the circular economy. Magazine Environment for Europeans, 06/01/2016 (2016)
4. Eppinger, S: How sustainability fuels design innovation. MIT Sloan Manag. Rev. Fall 52(1) (2010)
5. Chesbrough, H.: Open Innovation: The New Imperative for Creating and Profiting from Technology. Harvard Business School Publishing Corporation, Boston (2003)