Venkata Rami Reddy, V., et al. “Zn(OAc)2&Middot;2H2O-Catalyzed One-Pot Efficient Synthesis of a-Amino Nitriles”. Asian Journal of Chemistry, vol. 26, no. 21, Oct. 2014, pp. 7439-42, doi:10.14233/ajchem.2014.17180.