“New Approach for the On-Line Spectrophotometric Determination of Folic Acid in Pure and Pharmaceutical Preparation via Oxidation by Cerium(IV) Sulphate Using Ayah 3Sx3-3D-Solar Cell CFI Spectrophotometer Analyzer”. 2023. Iraqi Journal of Science 55 (3B): 1153-63. https://ijs.uobaghdad.edu.iq/index.php/eijs/article/view/11541.