List of Articles هزینه های عملیاتی Open Access Article Abstract Page Full-Text 1 - Investigating the effect of electronic receipt and payment tools on reducing government and bank costs Behzad Alinejadi Ahmed Sarlak Cambys HejbarKiani 10.30495/fed.2022.694722 Open Access Article Abstract Page Full-Text 2 - Cost behavior analysis based on chaos theory Azizollah Rangraz basaligheh Fereydoon rahnamaroodposhti Fazel Mohammadi Nodeh sina Kheradyar