El-Rady, Eman Abd, and Islam Helmy El-Azab. “Reactivity of β-Enamino Ester of benzo[f]chromene: One Pot Synthesis of Isolated and Heterocycle-Fused Derivatives of benzo[f] Chromene”. European Journal of Chemistry, vol. 3, no. 1, Mar. 2012, pp. 81-86, doi:10.5155/eurjchem.3.1.81-86.507.