@book{24988,
	author = {Bikner-Ahsbahs, Angelika||Vohns, Andreas||Schmitt, Oliver||Bruder, Regina||Dörfler, Willi},
	title = {Theories in and of Mathematics Education},
	url = {https://library.oapen.org/bitstream/20.500.12657/27705/1/1002301.pdf||https://library.oapen.org/bitstream/20.500.12657/27705/1/1002301.pdf||https://library.oapen.org/bitstream/20.500.12657/27705/1/1002301.pdf}
}