Swamidoss, C.M., and D.D. Malkhede. “A Novel Liquid-Liquid Extraction Technique for the Extraction and Separation of Yttrium(III) With Hexaacetato Calix[6]arene”. Asian Journal of Chemistry 22, no. 9 (July 7, 2010): 6798–6804. Accessed July 4, 2024. https://asianpubs.org/index.php/ajchem/article/view/11913.