European Energy Futures 2030 Technology and Social Visions from the European Energy Delphi Survey - Wehnert, Timon; Araguás, Juan Pedro López; Bernardini, Oliviero; Jaworski, Lukasz; Jørgensen, Birte Holst; Jörß, Wolfram; Nielsen, Oliver; Ninni, Augusto; Oniszk-Poplawska, Anna; Velte, Daniela (Springer Berlin Heidelberg, 2007)