TY - JOUR AU - Shayestehfar, Shabnam TI - The test of the Fama-MacBeth model to measure the relationship between the expected investment risk metrics and the expected rate of return for knowledge-based companies active in the Tehran Stock Exchange JO - Agricultural Marketing and Commercialization Journal VL - 7 IS - 1 SP - 94 EP - 105 PY - 2023 DO - ER -