RAJU PODDAR, et al. “MOLECULAR EVOLUTION OF VIRULENCE GENES OF SWINE INFLUENZA VIRUS SUBTYPE-A H1N1:AN ANALYSIS OF HOST RADIATION”. International Journal of Pharma and Bio Sciences, vol. 2, no. 1, Mar. 2011, pp. 167-80, https://ijpbs.net/index.php/journal/article/view/670.