@inproceedings {tipaldi11icaps,
	author = {Tipaldi, Gian Diego and Arras, Kai O.},
	title = {{Planning Problems for Social Robots}},
	booktitle = {Proceedings of the International Conference on Automated Planning and Scheduling (ICAPS)},
	year = {2011},
	address = {Freiburg, Germany},
	url = {http://www.informatik.uni-freiburg.de/~tipaldi/papers/tipaldi11icaps.pdf}
}