Esfandiar , Masoud, Farzad Asayesh, Alireza Rousta, and Seyed Mahmood Hashemi. “The Model of Marketing and Sales Outcomes in the Bitumen Market”. Management Strategies and Engineering Sciences 7, no. 2 (June 30, 2025): 124–130. Accessed August 21, 2025. https://msesj.com/index.php/mses/article/view/198.