@conference{KHB+20,
	author = {Tommy Kubica and Tenshi Hara and Iris Braun and Alexander Schill},
	title = {An Approach to Support Interactive Activities in Live Stream Lectures},
	booktitle = {Proceedings of the 15th European Conference on Technology Enhanced Learning (EC-TEL 2020)},
	year = {2020},
	month = {9}
}