Choi, J., Productivity growth in the transportation industries in the United States: An application of the DEA Malmquist Productivity Index

Choi, J., Roberts, D., and Lee, E. 2015: Productivity growth in the transportation industries in the United States: An application of the DEA Malmquist Productivity Index. American Journal of Operations Research, 5(1), 1-20. doi: 10.4236/ajor.2015.51001.