[1]
K. Hamdi Razeg, خالد, K. D. Alazawi, کریم, M. Ahmed Hmood, and محمود, “Structural and electrical properties of the high temperature superconducting system Bi2Ba2Ca2Cu3O10+δ”, EDUSJ, vol. 24, no. 4, pp. 114–122, Jan. 1970.