@book {9783864964398, title = "Unternehmensplanung", isbn = "9783864964398", edition = "1", url = "http://www.content-select.com/index.php?id=bib_view&ean=9783864964398", url = "https://content-select.com/de/portal/media/view/5404466d-98e0-4e76-9af7-2859b0dd2d03", publisher = "UVK Verlagsgesellschaft", }