@book {9783823390459, 
	title = "Nachtdenken",
	isbn = "9783823390459",
	edition = "1",
	url = "http://www.content-select.com/index.php?id=bib_view&ean=9783823390459",
	url = "https://content-select.com/de/portal/media/view/5a96973f-74dc-497d-8eec-376cb0dd2d03",
	publisher = "Narr Francke Attempto",
}