YUDIANTORO, Dwi Fitri et al. Magma Evolution of Ngebel Volcano, Ponorogo, East Java, Indonesia. Indonesian Journal on Geoscience, [S. l.], v. 10, n. 1, p. 51–62, 2023. DOI: 10.17014/ijog.10.1.51-62. Disponível em: https://ijog.geologi.esdm.go.id/index.php/IJOG/article/view/838. Acesso em: 2 jul. 2024.