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C. Kropp. La transformation Sociale par l’Innovation Sociale. Conference Proceedings, Seite 428-443. Center for research on social innovations – CRISES, (2014)
G. Beck, C. Kropp, und D. Odukoya. The Center for Sustainable Design (ed.): Sustainable Innovation 09: Towards a Low Carbon Innovation Revolution. Towards sustainable product design. Proceedings of the 14th International Conference. 26. + 27. October, Farnham Castle, UK, Seite 14-19. The Center for Sustainable Design, (2009)