Islam, M., M. Parvin, J. Akhter, M. Islam, M. Siddique, and M. Rashid. “Clinical Evaluation of Hyperimmune Serum for the Treatment of Newcastle Disease in Indigenous Layer Birds”. Progressive Agriculture, vol. 24, no. 1-2, June 2014, pp. 79-84, doi:10.3329/pa.v24i1-2.19103.