List of Articles threshold models Open Access Article Abstract Page Full-Text 1 - state dependent values of tax multiplier in iran negin heidarizadeh sayed.yahya abtahi zohreh tabatabaeinasab mohamadali dehghantafti 10.30495/eco.2023.1956569.2651 Open Access Article Abstract Page Full-Text 2 - analysis of regime dependent effects of financial leverage on firms Financial Vulnerability evaz kenarkoohi Sayed Yahya Abtahi hamid khajeh mahmoodabadi gholamreza askarzadeh Open Access Article Abstract Page Full-Text 3 - threshold cointegration of the stock market returns and currency and gold markets in Iran sayed yahya abtahi ali azadineghad