@article{ author = {Jafari, Ali, Amirabdollahy, Ali}, title = {The impact of business group affiliation on investment efficiency: The mediating role of product market competition}, journal = {Rahbord-e-Tousee}, year = {2026}, volume = {22}, issue = {85}, pages = {376-405}, doi = {}, url = {https://rimag.ir/fa/Article/54414} }