Bubeck, S (Reprint Author), Univ Stuttgart, Inst Energy Econ & Rat Use Energy IER, Hessbruehlstr 49A, D-70565 Stuttgart, Germany.
Bubeck, Steffen; Tomaschek, Jan; Fahl, Ulrich, Univ Stuttgart, Inst Energy Econ & Rat Use Energy IER, Hessbruehlstr 49A, D-70565 Stuttgart, Germany.