Cholifah, Latifatul, et al. “Identification of the Grindulu Fault in Pacitan, East Java Using Magnetic Method”.
Jurnal Penelitian Fisika Dan Aplikasinya (JPFA)
, vol. 10, no. 1, July 2020, pp. 22-33, doi:10.26740/jpfa.v10n1.p22-33.