Khalid Hamdi Razzeg, Abdul Kareem Dahas Ali and Chanar Abiden Zaynel (2019) “Effect of repeated annealing on the synthetic and electrical properties of Bi2-(x+y)PbxAgy Sr2Ca2Cu3O10+δ electrically superconductor”, Tikrit Journal of Pure Science, 24(4), pp. 57–61. doi: 10.25130/tjps.v24i4.400.