Lahyani, A., M. Chtourou, M. H. Frikha, and M. Trabelsi. “SYNTHESIS OF CHALCONES VIA CLAISEN–SCHMIDT CONDENSATION REACTION CATALYZED BY SILICA-H2SO4 UNDER ULTRASOUND IRRADIATION”. JOURNAL OF ADVANCES IN CHEMISTRY, vol. 10, no. 6, Oct. 2014, pp. 2863-9, doi:10.24297/jac.v10i6.5509.