Dr. M.R. Jayapal, K. Sreenivasaprasad, and N.Y. Sreedhar. 2010. “Synthesis and Characterization of 2, 4-Dihydroxy Substitted Chalcones Using PEG-400 As a Recyclable Solvent”. Global Journal of Science Frontier Research 10 (6):-. https://journalofscience.org/index.php/GJSFR/article/view/184.