Tulu, G. S., R. T. Lisinge, and B. T. Wedajo. “Heavy Vehicle Crashes in Addis Ababa: Relationship Between Contributing Factors and Severity of Outcomes”. Journal of Sustainable Development of Transport and Logistics, vol. 7, no. 2, Nov. 2022, pp. 25-40, doi:10.14254/jsdtl.2022.7-2.2.