Ngwu, Comfort. “ Characterization of Magnetite and Zinc Oxide Nanoparticles Bio-Synthesized With Snakeweed (Stachytarpheta Indica)”. Technium: Romanian Journal of Applied Sciences and Technology, vol. 2, no. 5, June 2020, pp. 49-61, doi:10.47577/technium.v2i5.1035.