@journal {10.xxxx/ZFG0912, 
	title = "Zeitschrift für Grundschulforschung 1/2 2009",
	journal = "ZfG- Zeitschrift für Grundschulforschung",
	ISSN = "1865-3553",
	year = "2009",
	number = "1",
	doi = "10.xxxx/ZFG0912",
	url = "https://content-select.com/index.php?id=bib_view&doi=10.xxxx%2FZFG0912",
	publisher = "Verlag Julius Klinkhardt",
	language = "",
}