1. J. Frittelli, A. Andrews, P. Parfomak, R. Pirog, J. Ramseur, M. Ratner, U.S. Rail Transportation of Crude Oil: Background and Issues for Congress. Technical report, Congressional Research Service, 2014. CRS Report Number: R43390
2. K. Clay, A. Jha, N. Muller, R. Walsh, The External Costs of Transporting Petroleum Products by Pipelines and Rail: Evidence from Shipments of Crude Oil from North Dakota. Technical report
3. PHMSA, Report Shipping Crude Oil by Truck, Rail, and Pipeline. Technical report, Pipeline and Hazardous Materials Safety Administration, 2018
4. Pipeline and Hazardous Materials Safety Administration, Pipeline Incident 20 Year Trends, 2018
5. R. Carvalho, L. Buzna, F. Bono, M. Masera, D.K. Arrowsmith, D. Helbing, Resilience of natural gas networks during conflicts, crises and disruptions. PLOS ONE 9(3), 1–9 (2014)