@techreport{LuhmannSterk2007, author = {Luhmann, Hans-Jochen and Sterk, Wolfgang}, title = {Klimaschutzziel f{\"u}r Deutschland : Kurzstudie ; f{\"u}r Greenpeace Deutschland, Energiebereich}, institution = {Wuppertal Institut f{\"u}r Klima, Umwelt, Energie}, address = {Wuppertal}, pages = {32}, year = {2007}, language = {de} }