T. T. V. Nga and T. T. Loan, Fabrication and Magnetic Properties of Sintered SrFe\(_{12}\)O\(_{19}\)-NiFe\(_{2}\)O\(_{4}\) Nanocomposites, Comm. Phys. 27 (2017) 255. DOI: https://doi.org/10.15625/0868-3166/27/3/9647.