Oxygen Icon of Kolf
<a rel="nofollow" class="external text" href="https://github.com/KDE/oxygen-icons5/blob/master/AUTHORS">The Oxygen Team</a>, <a rel="nofollow" class="external text" href="https://techbase.kde.org/Projects/Oxygen/Licensing">KDE</a>;
LGPL
<a rel="nofollow" class="external text" href="https://github.com/KDE/oxygen-icons5">KDE github</a>;