@article{kortenkamp_early_2014,
	title = {Early {Mathematics} {Learning}. {Selected} {Papers} of the {POEM} 2012 {Conference}.},
	author = {Kortenkamp, Ulrich and Brandt, Birgit and Benz, Christiane and Krummheuer, Götz and Ladel, Silke and Vogel, Rose},
	year = {2014},
	note = {Publisher: Springer: New York.},
}

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