Dr. M.R. Jayapal, K. Sreenivasaprasad, and N.Y. Sreedhar. “Synthesis and Characterization of 2, 4-Dihydroxy Substitted Chalcones Using PEG-400 As a Recyclable Solvent”. Global Journal of Science Frontier Research 10, no. 6 (March 15, 2010): -. Accessed May 3, 2024. https://journalofscience.org/index.php/GJSFR/article/view/184.