(de-de)viaf.orghttp://collection.britishmuseum.org/id/person-institution/91399collection.britishmuseum.orghttp://d-nb.info/gnd/102394156d-nb.infohttps://www.freebase.com/m/09519www.freebase.comhttps://www.wikidata.org/entity/Q202543www.wikidata.org。