Keshavarzi, Hooman, Iranban, Sayed Javad, Mohammadian, Moghadeseh. “Designing a Product Development Process Model in Gas Refining Companies Based on Grounded Theory.” Journal of Management and Sustainable Development Studies, vol. 2, no. 4, 2023, pp. 23-42. 10.30495/msds.2023.1974735.1103