Mumtaz, M., & Asghar, M. A. (2018). Dielectric properties of ferromagnetic Ni nanoparticles added (Cu0.5Tl0.5)Ba2Ca2Cu3O10−δ superconducting phase. ФІЗИКА НИЗЬКИХ ТЕМПЕРАТУР, 44(8), 970–976. https://doi.org/10.1063/1.5049155