Chiranjeevi, Barreddi; Koyyada, Ganesh; Prabusreenivasan; Kumar, Vanaja; Sujitha, Pombala; Kumar, C. Ganesh; Sridhar; Shaik, Saida; Chandrasekharam, Malapaka RSC Advances, 2013 , vol. 3, # 37 p. 16475 - 16485