@inbook {939,
	title = {Distraktorenermittlung f{\"u}r elektronische Beweise in der Lehre},
	booktitle = {Beitr{\"a}ge zum Mathematikunterricht 2017},
	year = {2017},
	publisher = {WTM-Verlag},
	organization = {WTM-Verlag},
	address = {M{\"u}nster},
	author = {Platz, Melanie and Krieger, M and Niehaus, Engelbert and Winter, K}
}
