1. Yang, Q. (2011). Transport business China. Tokyo: Rail Transportation. (In Chinese), (5), 95.
2. Xu, X. (2009). The method of strategic analysis of metropolitan railway traffic development and application. China Science and Technology Information, 16, 2009–2016.
3. Xiao, X., Zhu, X., & Xiao, X. (2013). Optimization research of fare system for rail transit in Beijing economic & trade update. Economic and Trade Update, 24, 135–136. (In Chinese).
4. Phang, SY. (2006). Public private partnership in urban rail transit: Recent international experience (pp. 57–72). USA: Taylor and Francis, 47(1).
5. Chen, J. X., & Fang, J. (2011). On the public private partnership financing strategies of urban rail transit. Advanced Materials Research, 255–260, 4095–4099.