Kamrunnahar, S., M. Alim, A. Taslima, M. Islam, and N. Paul. “Comparative Study on Production of Antibody in Broilers Vaccinated With Four Lyophilized Newcastle Disease Vaccine”. Bangladesh Journal of Microbiology, vol. 27, no. 1, Dec. 2011, pp. 1-5, doi:10.3329/bjm.v27i1.9159.