“Tuning Structural and Optical Properties of Co₀.₅Mn₀.₅₋ₓZnₓFe₂O₄ Nanoferrites via Zn Substitution for Optoelectronic Applications” (2026) Sana’a University Journal of Applied Sciences and Technology, 4(6), pp. 2209–2218. doi:10.59628/jast.v4i5.2925.