Huy Tung, Dau, et al. “Evaluation of Efficacy of NIBRG-14 Vaccine Against Highly Pathogenic H5N1 Viruses Isolated During 2011 Influenza Outbreaks in Vietnam”. <i>Vietnam Journal of Science and Technology</i>, vol. 50, no. 1, Apr. 2017, pp. 73-81, doi:10.15625/0866-708X/50/1/9474.