Syaiful, Mohammad, et al. “Wireline Log Responses, Mudweight, Clay Mineralogy, and Implied Overpressure Condition: Insights from Aru Field, North Sumatra Basin”. Indonesian Journal on Geoscience, vol. 7, no. 2, Apr. 2020, pp. 105-19, doi:10.17014/ijog.7.2.105-119.