“Perbandingan Metode International Roughness Index (IRI) Dan Surface Distress Index (SDI) Terhadap Kerusakan Jalan (Studi Kasus: Sp. Panam ??? Sp. Air Hitam Pekanbaru)”. SAINSTEK 13, no. 1 (June 29, 2025): 1–9. Accessed October 7, 2026. https://ejournal.sttp-yds.ac.id/index.php/js/article/view/264.