@inbook {933,
	title = {Classroom Assessment and Learning Support for Logical Reasoning in Mathematics Education - Suggestion of an E-proof-Environment},
	booktitle = {Classroom Assessment in Mathematics: Perspectives from around the Globe},
	year = {2018},
	publisher = {Springer},
	organization = {Springer},
	address = {Cham},
	author = {Platz, Melanie and Krieger, M and Winter, K and Niehaus, Engelbert},
	editor = {Thompson, Denisse R. and Burton, Megan and Cusi, Annalisa and Wright, David}
}
