@inproceedings{publication-12937,
	address={New York, NY, USA},
	author={Bolzoni, Paolo and Helmer, Sven and Wellenzohn, Kevin and Gamper, Johann and Andritsos, Periklis},
	booktitle={Proceedings of the 22nd ACM SIGSPATIAL International Conference               on Advances in Geographic Information Systems, Dallas/Fort Worth,               TX, USA, November 4-7, 2014},
	doi={10.1145/2666310.2666411},
	isbn={978-1-4503-3131-9},
	month={NOV},
	pages={203-212},
	publisher={ACM},
	title={Efficient itinerary planning with category constraints},
	year=2014,
}