Y. Murthy, R. Venu, B. Govindh, B. Diwakar, K. Nagalakshmi, and E. Singh, “Solvent-Free Synthesis of β-Enamino Compounds Promoted by Ferric(III) Ammonium Nitrate”, ajc, vol. 22, no. 4, pp. 3047–3053, Mar. 2010.