@inproceedings{Schoen_2015a,
	author = { Daniel Schoen and Licheng Yang and Melanie Klinger and Stephan Kopf and Wolfgang Effelsberg },
	title = { On the Effects of Different Parameters in Classroom Interactivity Systems on Students },
	booktitle = { Proceedings of World Conference on Educational Media and Technology 2015 },
	year = { 2015 },
	month = { June },
	pages = { 409--505 },
	address = { Canada },
	publisher = { Association for the Advancement of Computing in Education (AACE) },
}