1. User experience evolution lifecycle framework;Abbasi;World Academy of Science, Engineering and Technology,2012
2. About Citi Bike (2013). Retrieved on June 24, 2014.
3. ‘On the outside’: Constructing cycling citizenship;Aldred;Social & Cultural Geography,2010
4. All work and no play? The role of instrumental and affective factors in work and leisure journeys by different travel modes;Anable;Transportation Research Part A: Policy and Practice,2005
5. Antoniades, P. & Chrysanthou, A. (2009). Report European best practices in bike sharing systems. Intelligent Energy Europe. Retrieved on May 21, 2015.