Khalid Hamdi Razzeg; 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 J. Pure Sci. 2019, 24, 57-61.