@article{Foster2017,
	author = {Foster, Mary Ellen and Gaschler, Andre and Giuliani, Manuel},
	title = {Automatically Classifying User Engagement for Dynamic Multi-party Human--Robot Interaction},
	journal = {International Journal of Social Robotics},
	year = {2017},
	month = {Jul},
	day = {20},
	issn = {1875-4805},
	doi = {10.1007/s12369-017-0414-y}
}