<https://www.guitarristas.info/foros/ibanez-trs-trem-licenced-floyd-rose-problema-afinacion/174722>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://www.guitarristas.info/foros/ibanez-trs-trem-licenced-floyd-rose-problema-afinacion/174722>