Ni Luh, T. A.; Pramono, K. R. O.; Soedarsono, J. W.; Solihin, M. Y. M. 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. RiESTech 2024, 2, 15-26.