1.
VARAHRAMI V. Effects of R&D Costs on Profit of Producers of Oil Productions in Tehran Stock Exchange. J. Soc. Adm. Sci. [Internet]. 2015 Sep. 18 [cited 2024 Sep. 19];2(3):132-4. Available from: https://journals.econsciences.com/index.php/JSAS/article/view/428