[1. Asmild, M., Holvad, T., Hougaard, J. L., Kronborg, D. (2008). Railway Reforms: Do They Influence Operating Efficiency? Working Paper No 08-05. University of Copenhagen. 29.]Search in Google Scholar
[2. Beria, P., Quinet, E., de Rus, G., Schulz, C. (2012). A comparison of rail liberalisation levels across four European countries. Research in Transportation Economics, 36(1), 110-120.10.1016/j.retrec.2012.03.014]Search in Google Scholar
[3. Calvo. F., De Oña, Ch. (2012). Are rail charges connected to costs? Journal of Transport Geography, 22(3), 28-33.10.1016/j.jtrangeo.2011.11.004]Search in Google Scholar
[4. Cantos, P., Pastor, J.M., Serrano, L. (2002). Cost and revenue inefficiencies in the European railways. Instituto Valenciano de Investigaciones Económicas, S.A. 33.]Search in Google Scholar
[5. Friebel, G., Ivaldi, M., Vibes, C. (2004). Railway (De)Regulation: A European Efficiency Comparison. Working Paper. Universite de Toulouse, 36.]Search in Google Scholar
[6. IBM Global Business Services. (2007). Rail Liberalization Index 2007, Brussels.]Search in Google Scholar
[7. Ivaldi, M., McCullough, C. J. (2006). Sub-additivity Tests for Network Separation with an Application to US Railroads, SSRN Working paper 528542. 24.]Search in Google Scholar
[8. Ksoll, M. (2004). Integration of Infrastructure and Transport: an Assessment from Industrial Economics and Railway Perspectives. Presentation at the 2nd Conference on Railroad Industry Structure, Competition, and Investment North-western University Transportation Center, Evanston (IL., USA), October 08-09. 22.]Search in Google Scholar
[9. Nash, C. (2010). European rail reform and passenger services - the next steps. Research in Transportation Economics, 29(1), 204-211.10.1016/j.retrec.2010.07.025]Search in Google Scholar
[10. Nash, C.A., Rivera-Trulijo, C. (2004). Railway Regulatory Reform in Europe, Principles and Practice. Institute for Transport Studies, University of Leeds.]Search in Google Scholar
[11. Nash, C., Matthews, B., Thompson, L.S. (2005). Railway Reform and Charges for the Use of Infrastructure. Paris, ECMT.]Search in Google Scholar
[12. Sánchez-Borràs, M., Nash, Ch., Abrantes, P., López-Pita, A. (2010). Rail access charges and the competitiveness of high speed trains. Transport Policy, 17(2), 102-109.10.1016/j.tranpol.2009.12.001]Search in Google Scholar
[13. Wills-Johnson, N. (2008). Separability and Subadditivity in Australian Railways. Economic Record, 84(264), 95-108.10.1111/j.1475-4932.2008.00449.x]Search in Google Scholar