http://acceptworldwide.com/
https://www.metal-archives.com/bands/Bad_Steve/2742
http://www2.uni-wuppertal.de/FB5-Hofaue/Brock/Lehrbetr/Koemmet.html
https://web.archive.org/web/20110719010207/http://face.fh-duesseldorf.de/face/gruppe/
http://face.fh-duesseldorf.de/face/gruppe/
https://web.archive.org/web/20111123025917/http://www.popakademie.de/studium/fachbereich-popularmusik/popmusikdesign/dozenten
http://www.popakademie.de/studium/fachbereich-popularmusik/popmusikdesign/dozenten
https://www.domainmarket.com/buynow/liontwin.com
http://www.liontwin.com/
http://www.koemmet.com/
http://www.acceptworldwide.com/
http://www.starlight-express-musical.de/
https://d-nb.info/gnd/1046866826
https://musicbrainz.org/artist/5e6d7fc7-2947-4397-85e7-94fd10d08ca4
https://viaf.org/viaf/306276760
https://www.worldcat.org/identities/containsVIAFID/306276760