TY - JOUR AU - Nikoomaram, Hashem AU - Zomorodian, Gholamreza TI - Investigation of capabilities of econometrist models in determination of value at risk in investment companies for determination of optimized portfolio in capital market of Iran JO - Journal of Investment Knowledge VL - 3 IS - 12 SP - 195 EP - 216 PY - 2014 DO - ER -