The enactment of socio-technical transition pathways: A reformulated typology and a comparative multi-level analysis of the German and UK low-carbon electricity transitions (1990–2014) - Geels, Frank W.; Kern, Florian; Fuchs, Gerhard; Hinderer, Nele; Kungl, Gregor; Mylan, Josephine; Neukirch, Mario; Wassermann, Sandra (Research Policy, 2016)