Ikhwandi, A. F. F. P. F. L. (2023) “Identification of the Manna Segment Sumatran Fault Using GGMplus Gravity Anomaly Data with the Second Vertical Derivative (SVD) Method”, JURNAL ILMU FISIKA | UNIVERSITAS ANDALAS, 15(2), pp. 123–136. doi: 10.25077/jif.15.2.123-136.2023.