N. A. CHALABI and G. F. FADHIL, “NOVEL PHOTOSYNTHESIS AND CHARACTERIZATION OF 4-(5,7- DICHLORO-8aH-CHROMENE-2-YL)-N, N-DIMETHYLANILINE FROM ITS CHALCONE ISOMER”, JDU, vol. 23, no. 2, pp. 135-149, Dec. 2020.