@inproceedings{CIKM-2011-GamperBCI,
	author        = "Johann Gamper and Michael H. Böhlen and Willi Cometti and Markus Innerebner",
	booktitle     = "{Proceedings of the 20th ACM International Conference on Information and Knowledge Management}",
	doi           = "10.1145/2063576.2063972",
	isbn          = "978-1-4503-0717-8",
	pages         = "2381--2384",
	publisher     = "{ACM}",
	title         = "{Defining isochrones in multimodal spatial networks}",
	year          = 2011,
}