Bachri M, Masfria M, Syahputra S, Hafid H. Quantitative Estimation of Anti Hypertension Combination by Ratio Subtraction Spectrophotometry Method. Open Access Maced J Med Sci [Internet]. 2019 Aug. 30 [cited 2024 May 4];7(17):2940-6. Available from: https://oamjms.eu/index.php/mjms/article/view/oamjms.2019.750