H. A. Setyono, V. Suryanti, A. U. Putri, and M. Koketsu, “Modification Structure of Cinnamaldehyde with Primary Amines by Reflux and Sonication Methods in the Presence of Sulfuric Acid as a Catalyst”, sci. technol. indones., vol. 9, no. 3, pp. 586–593, Jun. 2024.