References
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- Oswald , R. , “ An Investigation of Double Stack Rail Car Operating Costs .” Masters Thesis , University of Washington , Seattle , WA .
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- UNCTAD , Review of Maritime Transport 1989, United Nations Conference of Trade and Development, United Nations , New York , 1990 .
- USDOT , “ Double Stack Container Systems Implications for U.S. Railroads and Ports, Final Report ”, Fedral Railroad Administration, Maritime Administration , Washington , D.C. , 1990 .