1. Allen WB, Mahmoud MM, McNeil D (1985) The importance of time in transit and reliability of transit time for shippers, receivers, and carriers. Transport Res B 19(5):447–456
2. Allman WP (1966) A computer simulation model of railroad freight transportation system. Proceedings of 4th international conference on operations research, Wiley, pp 339–351
3. Allman WP (1966) A network simulation approach to the railroad freight train scheduling and car sorting problem, Ph.D. Thesis, Northwestern University
4. Ballou RH (2004) Business logistics: supply chain management. Pearson Prentice Hall, Upper Saddle River, NJ, p 14
5. Bellman JA (1967) Railroad network model. Second international symposium on the use of cybernetics on the railways, Montreal, Canada. Proceedings edited by International Union of Railways (UIC), Paris, France