D.S. Aswatha Narayana, K.T. Rangaswamy, K.S. Shankarappa, M.N. Maruthi, C.N. Lakshminarayana Reddy, A.R. Rekha and K.V. Keshava Murthy
International Journal of Virology 6 ( 2 ): 82 - 92 , 2010