@book {9783800738748, 
	title = "SIMATIC S7",
	author = "Gießler, Walter",
	isbn = "9783800738748",
	year = "2009",
	edition = "4",
	keywords = "Steuerung, Programmiersprache, Automatisierung, SPS, Steuerungstechnik, STEP 7, SIMATIC S7",
	url = "http://www.content-select.com/index.php?id=bib_view&ean=9783800738748",
	url = "https://content-select.com/de/portal/media/view/5720a780-cb34-4d95-808a-49e0b0dd2d03",
	publisher = "VDE Verlag",
	language = "ger",
}