Khashan, Khawla. “Synthesis of Polyynes by Laser Ablation of Graphite in Ethanol”. Iraqi Journal of Physics (IJP) 11, no. 21 (February 24, 2019): 37-47. Accessed August 16, 2021. https://ijp.uobaghdad.edu.iq/index.php/physics/article/view/365.