List of Articles hossein dibachi Article 1 - Measuring the Efficiency and Ranking of Photocatalytic Degradation of Azo dye AR 206 and COD Using Data Envelopment Analysis 20.1001.1.25382217.2022.16.2.1.9 Hossein Dibachi Theory of Approximation and Applications , Issue 1 , Year , Spring 2022