Sukoco, L. P. (2026) “Development of Regulatory Recommendations for City Bus Bumper Bars through Design and Analysis Based on Standard 67 Pa. Code § 171.44”, Piston: Journal of Technical Engineering, 9(2), pp. 102–111. Available at: https://openjournal.unpam.ac.id/index.php/Piston/article/view/56539 (Accessed: 26 January 2026).