Cite
Productivity and efficiency in urban railways: Parametric and non-parametric estimates
MLA
Graham, Daniel J. “Productivity and Efficiency in Urban Railways: Parametric and Non-Parametric Estimates.” Transportation Research Part E: Logistics & Transportation Review, vol. 44, no. 1, Jan. 2008, pp. 84–99. EBSCOhost, https://doi.org/10.1016/j.tre.2006.04.001.
APA
Graham, D. J. (2008). Productivity and efficiency in urban railways: Parametric and non-parametric estimates. Transportation Research Part E: Logistics & Transportation Review, 44(1), 84–99. https://doi.org/10.1016/j.tre.2006.04.001
Chicago
Graham, Daniel J. 2008. “Productivity and Efficiency in Urban Railways: Parametric and Non-Parametric Estimates.” Transportation Research Part E: Logistics & Transportation Review 44 (1): 84–99. doi:10.1016/j.tre.2006.04.001.