Ilcham, A., Adittyanto, M., Asrori, K., & Umar, W. (2023). Bentonite-Based Drilling Boyolali Mud Fabrication with Additive Carboxymethyl Cellulose, Na2CO3 and KOH. Journal of Earth Energy Engineering, 12(2), 76–84. https://doi.org/10.25299/jeee.2023.13497