List of Articles Mohhamad Seyfpanah Article 1 - Centralized resource allocation SBM proposed method 10.30495/ijdea.2022.68508.1170 Mohhamad Seyfpanah International Journal of Data Envelopment Analysis , Issue 2 , Year , Spring 2022 Article 2 - Identification of congestion in two-stage data envelopment analysis 10.30495/ijdea.2022.68510.1172 Mohhamad Seyfpanah International Journal of Data Envelopment Analysis , Issue 4 , Year , Summer 2021 Article 3 - Ranking all of efficient units using the proposed SBM model 10.30495/ijdea.2022.68509.1171 Mohhamad Seyfpanah International Journal of Data Envelopment Analysis , Issue 2 , Year , Spring 2021