“Recent Advances in Biodiesel Synthesis from Waste Cooking Oil Using Magnetic Nanoparticle-Based Catalysts: A Brief Review: Recent Advances in Biodiesel Synthesis from Waste Cooking Oil ”. Rafidain Journal of Science, vol. 35, no. 1, Mar. 2026, pp. 137-4, https://doi.org/10.33899/rsci.v35i1.62007.