مخلوفي م., & حاجي اسحاق ز. (2023). The impact of Covid-19 pandemic on transportation - the rail transportation company as a case study-. المجلة الجزائرية للأمن والتنمية Algerian Review of Security and Developement, 12(01), 363–382. https://doi.org/10.59791/arsd.v12i01.3148