Abbas, L K, M M Abbas, and O S Mahdi. 2012. “Effect of Sintering Temperature on Bi2-xCuxPb0.3Sr2Ca2Cu3O10+δ Superconductors”. Al-Nahrain Journal of Science 15 (2): 113-20. https://anjs.edu.iq/index.php/anjs/article/view/1073.