@book {9783035507577, 
	title = "zwäg (E-Book)",
	author = "Müller, Andreas",
	isbn = "9783035507577",
	year = "2017",
	edition = "1",
	keywords = "Erziehung, Leistung, Komfortzone, multiple Fitness, Pädagogik/Didaktik, Didaktik/Unterrichtsmethodik, Sachbuch päd., Bildungsforschung/Bildungsentwicklung, Anstrengung, Fleiss",
	url = "http://www.content-select.com/index.php?id=bib_view&ean=9783035507577",
	url = "https://content-select.com/de/portal/media/view/59666415-093c-4278-8eb7-6933b0dd2d03",
	publisher = "hep verlag",
	language = "ger",
}