<https://forum.audio.com.pl/topic/66376-marantz-m-cr611-i-tannoy-mercury-71-mercury-72-do-wieczornego-s%C5%82uchania/#comment-267865>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://forum.audio.com.pl/topic/66376-marantz-m-cr611-i-tannoy-mercury-71-mercury-72-do-wieczornego-s%C5%82uchania/>