@book {9783834361110, title = "SPS-Grundkurs mit SIMATIC S7", author = "Kaftan, Jürgen", isbn = "9783834361110", edition = "5", url = "http://www.content-select.com/index.php?id=bib_view&ean=9783834361110", url = "https://content-select.com/de/portal/media/view/528f28d9-dd44-495f-a446-1c4a2efc1343", publisher = "Vogel Communications Group", }