Risal, Risal, Juswan Sade, and Fuad Mahfud Assidiq. “Analysis of the Effect of Using Concrete Mattresses on Subsea Pipelines”. Maritime Park: Journal of Maritime Technology and Society 3, no. 2 (June 28, 2024): 99-108. Accessed April 6, 2025. http://334012.libg.asia/index.php/maritimepark/article/view/35390.