Mohammed, Raghad Hussein, and Rana Mahdi Salih. “Effect of Walnut Shell Powder and Nano-TiO2 on the Mechanical, Thermal, and Water Absorption Properties of Polyester Composites”. Kufa Journal of Engineering, vol. 17, no. 3, Aug. 2026, pp. 665-88, https://doi.org/10.30572/2018/KJE/170338.