List of Articles Porter Hypothesis Open Access Article Abstract Page Full-Text 1 - Nonlinear affect in Competitiveness and Firm Innovation by Environmental Policy Stringency; testing the Porter's Hypothesis omidali adeli yazdan goudarzi ali akbar ebrahiminejad 10.22034/jest.2021.50262.4965 Open Access Article Abstract Page Full-Text 2 - The Impact of Environmental Regulations on Industry Competitiveness: Evidence from Manufacturing Industries of USA, U.K & Canada somaye azami mojtaba almasi afsaneh golmohammadi Open Access Article Abstract Page Full-Text 3 - The moderating effect of research and development costs on the relationship between environmental performance and financial performance Tehran Stock Exchange companies Fereshteh Sadegh Pour Mohammad Reza Hosseini Masoom Hadi Saeidi 10.30495/afi.2022.1949672.1095