Grubler, A., F. Aguayo, K. Gallagher, M. Hekkert, K. Jiang, L. Mytelka, L. Neij, G. Nemet and C. Wilson, 2012: Chapter 24 - Policies for the Energy Technology Innovation System (ETIS). In Global Energy Assessment - Toward a Sustainable Future, Cambridge University Press, Cambridge, UK and New York, NY, USA and the International Institute for Applied Systems Analysis, Laxenburg, Austria, pp. 1665-1744.
http://www.iiasa.ac.at/*****
Nemet, G. F. (2019). How solar energy became cheap: A model for low-carbon innovation. Routledge, Taylor & Francis Group.