Choudhury, S., S. Akter, M. Rahman, A. Bhuiyan, S. Rahman, N. Khatun, and M. Hossain. “Structural, Dielectric and Electrical Properties of Zirconium Doped Barium Titanate Perovskite”. Journal of Bangladesh Academy of Sciences, vol. 32, no. 2, May 2009, doi:10.3329/jbas.v32i2.2434.