Dwi Prasetiyo, R Fiansyah, et al. “Slope Design for Cost Optimization of Slope Cutting and Reinforcement (Case Study: Trans-Sumatra Toll Road Rengat Pekanbaru Section Lingkar Pekanbaru Junction Pekanbaru Sta. 205+150 - 205+725)”. Journal of Infrastructure & Facility Asset Management, vol. 7, May 2025, pp. 63-78, https://journal.its.ac.id/index.php/jifam/article/view/4383.