The making of this document was supported by <b><a href="https://meta.wikimedia.org/wiki/Wikimedia_Polska" class="extiw" title="m:Wikimedia Polska">Wikimedia Polska Association</a></b>, within <a href="https://pl.wikimedia.org/wiki/Wikigranty" class="extiw" title="wmpl:Wikigranty">Wikigrant</a> no. <a href="https://pl.wikimedia.org/wiki/WG_2015-34" class="extiw" title="wmpl:WG 2015-34"><span class="layouttemplateargs" title="Template:Wikigrants_WMPL WG+2015-34">WG 2015-34</span></a>.
<a href="//commons.wikimedia.org/wiki/User:Muri_91" title="User:Muri 91">Jakub Murat (Muri)</a>
<span class="int-own-work" lang="en">Own work</span>