de.wikipedia.org
de.wikipedia.org
books.google.com
link.springer.com
link.springer.com
openlibrary.org
onb.digital
ÖNB Digital
https://onb.digital › result › 117DCC94
portal.dnb.de
Deutsche Nationalbibliothek
https://portal.dnb.de › opac.htm?method=simpleSearch&cqlMode=true&query=nid=1050464753
howtopronounce.com
HowToPronounce.com
https://www.howtopronounce.com › anton-fürnstein
zlibrary.to
wikidata.org
wikidata.org
https://www.wikidata.org › wiki › Q23561400
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