List of Articles Two stage system Open Access Article Abstract Page Full-Text 1 - Fuzzy Efficiency Decomposition in Two–Stage Systems: A new Slack-Based Measure Approach Manoochehr Ziyae Berentin Ghasem Tohidi Shabnam Razavyan Mahnaz Barkhordari Open Access Article Abstract Page Full-Text 2 - Fuzzy Efficiency Decomposition in Two–Stage Systems: A New Slack-Based Measure Approach Manoochehr Ziyae Berentin Ghasem Tohidi Shabnam Razavyan Mahnaz Barkhordari