“Characterization of Thermo-Physical and Hardness Properties of Unsaturated Polyester Resin Hybrid Nano Composites Sihama Issa Salih1, Waleed Bdaiwi Salih2, Husam Sakin Hamad2”. Iraqi Journal of Physics, vol. 16, no. 37, Sept. 2018, pp. 136-48, https://doi.org/10.30723/ijp.v16i37.85.