<https://erich-schairer.de/#website>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<http://schema.org/WebSite>
<https://www.erich-schairer.de/wp-content/plugins/gtranslate/url_addon/gtranslate.php?glang=da&gurl=leitartikel-1923/>