@inbook {935,
	title = {To {\textquotedblleft}E{\textquotedblright} or not to {\textquotedblleft}E{\textquotedblright}? That is the Question. Chancen \& Grenzen eines E-Proof-Systems zur F{\"o}rderung von Beweiskompetenzen},
	booktitle = {Beitr{\"a}ge zum Mathematikunterricht 2015},
	year = {2015},
	publisher = {WTM-Verlag},
	organization = {WTM-Verlag},
	address = {M{\"u}nster},
	author = {Platz, Melanie and Niehaus, Engelbert}
}
