Modeling the Relationship Between Green Supply Chain Management (GSCM) Elements and Operational Cost Efficiency Improvement in Pharmaceutical Companies Based on Systems Dynamics: A Case Study of PT. XYZ. International Journal of Inventive Engineering and Sciences (IJIES), [S. l.], v. 12, n. 7, p. 8–12, 2025. DOI: 10.35940/ijies.H1093.12070725. Disponível em: https://journals.blueeyesintelligence.org/index.php/ijies/article/view/842.. Acesso em: 1 aug. 2025.