H. H. Mohammed, “Synthesis of fused cyclic chromene and alicyclic chromene derivatives from 2-amino-4-[4-(dimethylamino)phenyl]5-oxo-4H,5H-pyrano [3,2-c]chromene-3-carbonitrile”, Al-Mustansiriyah J. Sci., vol. 27, no. 5, pp. 36–44, Jul. 2017, doi: 10.23851/mjs.v27i5.165.