@book {9783867398534, 
	title = "Grübeln",
	author = "Teismann, Tobias",
	isbn = "9783867398534",
	year = "2018",
	edition = "3",
	url = "http://www.content-select.com/index.php?id=bib_view&ean=9783867398534",
	url = "https://content-select.com/de/portal/media/view/5ceceb43-4b38-463e-a54b-05d1b0dd2d03",
	publisher = "Balance Verlag",
	language = "ger",
}