Ni Luh, T. A., Pramono, K. R. O., Soedarsono, J. W. and Solihin, M. Y. M. (2024) “Study of Combination of Physalis angulata Leaf and Cassia angustifolia Leaf Extract with a 50:50 Ratio as Green Inhibitor for API 5L in 1M HCl Solution: Study of mixed-type Green Inhibitor for API 5L in HCl Solution”, Recent in Engineering Science and Technology, 2(03), pp. 15–26. doi: 10.59511/riestech.v2i03.66.