@book{359997,
	author = {Martin, Stein,},
	title = {A life's time for mathematics education and problem solving :},
	publisher = {WTM - Verlag fur Wissenschaftliche Texte und Medien,},
	year = {[2017]},
	series = {Festschriften der Mathematikdidaktik ;},
	address = {Munster :},
	url = {https://ebookcentral.proquest.com/lib/kuct-ebooks/detail.action?docID=6274227}
}