Hamdi Razzeg, Khalid, Abdul Kareem Dahas Ali, & , Chanar Abiden Zaynel. " Effect of repeated annealing on the synthetic and electrical properties of Bi2-(x+y)PbxAgy Sr2Ca2Cu3O10+δ electrically superconductor." Tikrit Journal of Pure Science [Online], 24.4 (2019): 57-61. Web. 14 Aug. 2021