1. B.H. Mao, F. Jiang, Q. Liu, et al., Urban Rail Transit, Beijing: Science Press, 2008 (in Chinese).
2. R.H. Xu, J.J. Chen, S.M. Du, Study on carrying capacity and use of rolling stock with multi-routing in urban rail transit, Journal of the China Railway Society, 2005, 27(4): 6–10 (in Chinese).
3. China Railway Siyuan Survey and Design Group Co. Ltd., Feasibility study report of first phase project of Changsha Metro Line 2, Wuhan: China Railway Siyuan Survey and Design Group Co. Ltd., 2009 (in Chinese).
4. L.B. Deng, Q. Zeng, W. Gao, et al., Optimization method for train Plan of urban rail transit, Science Paper Online, 2010, 5(10): 767–772 (in Chinese).
5. A. de Palma, R. Lindsey, Optimal timetable for public transportation, Transportation Research Part B, 2001, 35(8): 89–813.