Huyen, Nguyen Ngoc, Minh Hong, Nguyen Thi, Duc Thang, Pham, Dang Thanh, Tran, AND Anh, Ho Thi. " Changing the Magnetic Properties of Cobalt Ferrite Nanoparticles with Different Fabrication Conditions" VNU Journal of Science: Mathematics - Physics [Online], Volume 37 Number 2 (30 June 2021)