Ikhwandi AFFPFL, Arif Ismul Hadi, Hilmi Zakariya, Refrizon R. Identification of the Manna Segment Sumatran Fault Using GGMplus Gravity Anomaly Data with the Second Vertical Derivative (SVD) Method. J. Ilmu Fis. [Internet]. 2023 May 26 [cited 2024 Sep. 27];15(2):123-36. Available from: http://jif.fmipa.unand.ac.id/index.php/jif/article/view/558