“The e.ffect of simultaneous doping . of Pll in TJ. Q,6 htyer of ’T’lJ-xPb. Ba2Ca2Co_309- o s perconductors” (2017) Ibn AL-Haitham Journal For Pure and Applied Sciences, 21(3), pp. 27–38. Available at: https://jih.uobaghdad.edu.iq/index.php/j/article/view/1402 (Accessed: 16 July 2024).