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“Phenolphthalein in the analytical investigation of acetone. - Tests on the application of phenolphthalein-alpha-hydroxysulphonate in clinical analysis”, jpb, vol. 5, no. 4, pp. 227–232, Oct. 1949, Accessed: Jul. 07, 2025. [Online]. Available: https://revistas.unav.edu/index.php/ref/article/view/51572