Prativi, A. et al. 2019. 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, 1 (May 2019). DOI:https://doi.org/10.37367/jpi.v3i1.61.