Ngoc, K. T. B., P. V. Luyen, N. C. Khang, P. H. Nam, D. H. Manh, P. V. Vinh, P. V. Hung, and L. T. Lu. “One Step Synthesis of Water-Dispersible CoFe2O4 Magnetic Nanoparticles Using Triethylenetetramine As Solvent and Stabilising Ligand”. Vietnam Journal of Science and Technology, vol. 54, no. 1, Feb. 2016, pp. 123-32, doi:10.15625/0866-708X/54/1/6018.