Prativi, Ayu, Septiana Widi Astuti, and Ahmad Ependi. “Application of Prefabricated Vertical Drain (PVD) for Basic Soil Stabilization in the Railway Double Track Construction Project at Km 437 + 300 to Km 438 + 500 Gombong, Kebumen”. Jurnal Perkeretaapian Indonesia (Indonesian Railway Journal) 3, no. 1 (May 31, 2019). Accessed June 4, 2026. https://jurnal.ppi.ac.id/jpi/article/view/61.