Tâm 2020. OPTIMIZATION OF SYNTHESIS CONDITIONS FOR CoxFe3-xO4 NANOPARTICLES USING PLACKETT-BURMAN DESIGN AND RESPONSE SURFACE METHODOLOGY (RSM). Journal of Military Science and Technology. 66 (Apr. 2020), 154–161. DOI:https://doi.org/10.54939/1859-1043.j.mst.66.2020.154-161.