SHAHRAKI, Abdol Aziz. Improvement and development of the railroad transportation, reflection of the case of Iran. Journal of Sustainable Development of Transport and Logistics, [S.l.], v. 4, n. 2, p. 37-49, nov. 2019. ISSN 2520-2979. Available at: <http://jsdtl.sciview.net/index.php/jsdtl/article/view/82>. Date accessed: 21 feb. 2020. doi: http://dx.doi.org/10.14254/jsdtl.2019.4-2.4.