Bassima A. Abed Al-Hadi. “Spectrophotometric Determination of Sulphite and Thiamin Hydrochloride Using Proton Transfer Reaction-Application to Water Sample and Pharmaceutical Formation”. Tikrit Journal of Pure Science 24, no. 1 (March 18, 2019): 74–81. Accessed May 20, 2024. https://tjps.tu.edu.iq/index.php/tjps/article/view/333.