@book {9783949925023, 
	title = "Vom System zum Netzwerk",
	isbn = "9783949925023",
	edition = "1",
	url = "http://www.content-select.com/index.php?id=bib_view&ean=9783949925023",
	url = "https://content-select.com/de/portal/media/view/6384c889-cb90-44c8-862c-5fa78677ec64",
	publisher = "Westend",
}