German Wind Power Issue 01-2021
Wirtschaftswoche 2021 World Market Leaders
Wirtschaftswoche 46/2021
photovoltaik 10/2021
Focus 36/2021
Photon 11/2021
Das Magazin Der Grünen 2/2021
Photon 6/2021
MARKETS INTERNATIONAL 1/21
Yearbook Wind Energy 2021
