Logo <a href="https://de.wikipedia.org/wiki/Senvion" class="extiw" title="de:Senvion">Senvion</a>
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Own work  using: <a rel="nofollow" class="external free" href="http://www.senvion.com/fileadmin/user_upload/03_AboutUs/ImageBrochure/Senvion_Image_Brochure_EN.pdf">http://www.senvion.com/fileadmin/user_upload/03_AboutUs/ImageBrochure/Senvion_Image_Brochure_EN.pdf</a>