@book {9783864964558, title = "Die Everest-Methode", isbn = "9783864964558", edition = "1", url = "http://www.content-select.com/index.php?id=bib_view&ean=9783864964558", url = "https://content-select.com/de/portal/media/view/5404466c-bf3c-4193-b83c-2859b0dd2d03", publisher = "UVK Verlagsgesellschaft", }