SUNARDI, Sunardi; WIRAWAN, Willy Artha; AGHASTYA, Adya. Estimation of Geothermal Potential as a Power Supply (Reactivation Planning of the Madiun Slahung Ponorogo Railroad. Jurnal Perkeretaapian Indonesia (Indonesian Railway Journal), [S. l.], v. 2, n. 2, p. 104–106, 2018. DOI: 10.37367/jpi.v2i2.52. Disponível em: https://jurnal.ppi.ac.id/jpi/article/view/52. Acesso em: 4 jun. 2026.