<https://www.financnik.cz/forum/topic/1981-diskuze-k-clanku-psychologie-vystupu/page/2/#comment-151065>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://www.financnik.cz/forum/topic/1981-diskuze-k-clanku-psychologie-vystupu/page/2/?tab=comments#comment-110135>