Dang, Minh Hieu, et al. “Ferrite (Fe3O4) Nanoparticle in Soil Stimulates the Plant Growth in Peas and Bok Choy”. JST: Engineering And Technology For Sustainable Development, vol. 31, no. 4, Oct. 2021, pp. 38-45, doi:10.51316/jst.153.etsd.2021.31.4.7.