Tovar de la Fe, B. E. & Wall, A. (2019). Environmental efficiency for a cross-section of Spanish port authorities. Transportation Research Part D: Transport and Environment,v. 75, p. 170-178. https://doi.org/10.1016/j.trd.2019.08.024
Tovar de la Fe, B. E. & Wall, A. (2019). Environmental efficiency for a cross-section of Spanish port authorities. Transportation Research Part D: Transport and Environment,v. 75, p. 170-178. https://doi.org/10.1016/j.trd.2019.08.024