RANGNATH LABHADE, SHIVAJI, and VISHWAS BHASKAR GAIKWAD. “Spectrophotometric Determination of Fluoride Using Ferric-Thiocyanate Absorbing System”. Asian Journal of Chemistry 21, no. 9 (March 30, 2010): 7117–7124. Accessed April 3, 2025. https://asianpubs.org/index.php/ajchem/article/view/12190.