derivative work of <a class="external autonumber" href="https://commons.wikimedia.org/w/index.php?title=File:Kursk.svg">[2]</a>, improved for better display in Wikipedia. German language version with DejaVu fonts.
derivative work: <a href="//commons.wikimedia.org/wiki/User:Alexpl" title="User:Alexpl">Alexpl</a>
CC BY-SA 3.0
Own work based on: <a href="//commons.wikimedia.org/wiki/File:Kursk.svg" title="File:Kursk.svg">Kursk.svg</a> , created with <a href="https://en.wikipedia.org/wiki/Inkscape" class="extiw" title="w:Inkscape">Inkscape</a>