Gunawan, G., Y. Yanuar, A. S. A. Utomo, F. Fariz, and S. A. Lambang. “Reduction of Drag Resistance by Pressure Drop in Pipeline With 3-Dimensional Design Optimization”. Journal of Advanced Research in Experimental Fluid Mechanics and Heat Transfer, vol. 1, no. 1, Oct. 2020, pp. 1-10, https://www.akademiabaru.com/submit/index.php/arefmht/article/view/1129.