TY - RPRT U1 - Forschungsbericht A1 - Thomas, Stefan A1 - Barthel, Claus A1 - Ramesohl, Stephan T1 - Energy services of electric utilities in different national regulatory contexts : the energy sector liberalisation in Germany and the effect on energy services ; 3 case studies Y1 - 1998 SP - 35 S1 - 35 PB - Wuppertal Institut für Klima, Umwelt, Energie CY - Wuppertal PB - Wuppertal Institut für Klima, Umwelt, Energie CY - Wuppertal ER -