List of Articles Two-stage Data Envelopment Analysis Open Access Article Abstract Page Full-Text 1 - Efficiency Evaluation of Two-Stage Data Envelopment Analysis Model Based on Triangular Intuitionistic Fuzzy numbers andslack variables nafiseh javaherian Ali Hamzehee Hossein sayyadi Tooranloo Reza Soleymani-Damaneh Open Access Article Abstract Page Full-Text 2 - Performance evaluation with grey relational analysis, two-stage data envelopment analysis, and G-SAW methods: Case study in electricity distribution companies in Iran Shabnam Hashemi Nejad