<https://www.eurocircuits.de/eagle-dru-files-for-the-eurocircuits-pooling-services/#webpage>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://www.eurocircuits.de/EAGLE-DRU-files-for-the-Eurocircuits-pooling-services/>