فهرس المقالات elyas toraj المقاله 1 - The Mediating Effect of Information Asymmetry and Agency Costs on the Relationship Between CSR and Investment Efficiency 10.22034/amfa.2019.1870787.1238 Rohollah Arab Mohammad Gholamrezapoor Elyas Toraj Advances in Mathematical Finance and Applications , العدد 2 , السنة 5 , بهار 2020