Kanagesan, S., S. Jesurani, M. Sivakumar, C. Thirupathi, and T. Kalaivani. “Effect of Microwave Calcinations on Barium Hexaferrite Synthesized via Sol-Gel Combustion”. Journal of Scientific Research, vol. 3, no. 3, Aug. 2011, pp. 451-6, doi:10.3329/jsr.v3i3.6483.