“The Stability of the Regional Economic System Based on the Innovative Development of the Petrochemical Cluster”, Acad. J. Interdiscip. Stud., vol. 8, no. 4, p. 140, Dec. 2019, Accessed: May 01, 2024. [Online]. Available: https://www.richtmann.org/journal/index.php/ajis/article/view/10618