Halima, R., and Archna Narula. “Green Synthesis and Optimization of Silver Nanoparticles from Piper Betel and Jatropha Curcas to Enhance α-Amylase Activity”. Asian Journal of Chemistry, vol. 31, no. 12, Nov. 2019, pp. 2969-75, doi:10.14233/ajchem.2019.22269.