List of Articles همگرایی سیگما Open Access Article Abstract Page Full-Text 1 - Convergence of Per Capita Health Expenditures and Health Outcomes in Countries of the Economic Cooperation Organization Aziz Rezapour Samira Alipour Vahid Alipour Maryam Soleymani Movahed Open Access Article Abstract Page Full-Text 2 - Investigation of Per capita CO2 Dynamics in OPEC Countries (β and σ Convergence Approach) Davoud Hamidi Razi Majid Feshari 10.22034/jest.2017.10705