Saxena, Shailendra K, Niraj Mishra, Rakhi Saxena, ML Arvinda Swamy, Pranshu Sahgal, Shailja Saxena, Shrish Tiwari, Asha Mathur, and Madhavan P Nair. 2009. “Structural and Antigenic Variance Between Novel Influenza A H1N1 2009 and Influenza A H1N1 2008 Viruses”. The Journal of Infection in Developing Countries 4 (01):001-006. https://doi.org/10.3855/jidc.546.