<https://www.forumastronomiczne.pl/index.php?/topic/70774-duchy-w-kasjopei/#comment-374153>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://www.forumastronomiczne.pl/index.php?/topic/70774-duchy-w-kasjopei/#comment-374153>