G. W. Chang and W. W. Shi, “Study on Short-time Passenger Flow Forecast and the Optimal Capacity Allocation Problem in Urban Mass Trasit,” Beijing Jiaotong University, Beijing, 2011.
 J. Mao, “Urban Rail Transit Passenger Flow Short-Term Prediction Method and Empirical Research,” Beijing Jiaotong University, Beijing, 2012.
 R. Yang, “Study on Passenger Flow Forecast and Operation Scheduling Method of Urban Rail Transit,” Beijing Jiaotong University, Beijing, 2010.
 L. N. Wang, “Traffic Prediction and Scheduling of Urban Passenger Rail Network Based on Historical Data,” Beijing Jiaotong University, Beijing, 2011.
 D. E. Rumelhart, G. E. Hinton and R. J. Williams, “Learning Representations by Back-Propagation Errors,” Nature, Vol. 323, 1986, pp. 533-536.
 P. Jiang, Q. Shi, W. W. Chen, et al., “Prediction of Passenger Volume Based on Elman Type Recurrent Neural Network,” Journal of Hefei University of Technology (Science), Vol. 31, No. 3, 2008, pp. 340-342, 369.