1. Austin, J., 2011. Use of Twitter and Facebook by public transport operators and authorities in a time of crisis. In: Presented at IIID Traffic&Transport 2011: Traffic, Transport and Social Media (09).
2. A Complaint is a Gift – Using Customer Feedback as a Strategic Tool;Barow,1996
3. Abstract: user context recognition for navigation systems in public transportation;Baumann,2012
4. Adaptive sensor cooperation for predicting human mobility;Baumann,2014
5. Mobilität – everyday users of multimodal means of transport, Internationales Verkehrswesen;Beckmann;Transp. Mobility Manage.,2006