K. A. KALHORO, M. KHALID, A. D. CHANDIO, M. A. KALHORO, and N. CHANNA. “Impedance Spectroscopy of Copper Substituted Nickel Ferrite Nan Particles ”. Sindh University Research Journal - SURJ (Science Series), Vol. 49, no. 3, Sept. 2017, doi:10.26692/surj.v49i3.1512.