Tantirungrotechai, Y. ., Aphiradee Syananondh, and Napaporn Youngvises. “Flow Analysis With Cerium (IV) Colorimetric Reagent for Determination of Procaine and Elucidation of the Color Species by Computational Investigation”. Science & Technology Asia, vol. 28, no. 1, Mar. 2023, pp. 1-16, https://ph02.tci-thaijo.org/index.php/SciTechAsia/article/view/248863.