This is derived from the BSicon series.
<a href="//commons.wikimedia.org/wiki/User:Nenntmichruhigip" title="User:Nenntmichruhigip">nenntmichruhigip</a> on Wikimedia Commons
This <a href="https://en.wikipedia.org/wiki/vector_image" class="extiw" title="w:vector image">vector image</a> includes elements that have been taken or adapted from this file: