Suprayitno S, Darjanto H. Soft Soil Retrofitting Study with Bamboo Concave Mattress Against Stability of Jombang - Kertosono Railway Double Track Slope Due to Earthquake Load. ijieeb [nternet]. 2018Sep.23 [cited 2024May7];1(2):154-62. vailable from: https://jurnal.narotama.ac.id/index.php/ijieeb/article/view/844