List of Articles مدل بلک شولز Open Access Article Abstract Page Full-Text 1 - A hybrid model based on three-tier approach to predict corporate default Mohammad javad Sadehvand Hashem nikoomaram Hasan Ghalibaf Asl Mir feiz Fallah shams Open Access Article Abstract Page Full-Text 2 - comparative analysis of efficiency in Black Scholes model and the binomial tree in call options in tehran stock exchenge kourosh nasiri gholamreza askarzadeh Open Access Article Abstract Page Full-Text 3 - Review and Compare the earnings patterns of Asian, European and American Stock Option in Tehran Stock Exchange S. Ali Nabavi Chashami Farhad Abdollahi