Chinnaswamy A, Govindhan G, Kalita M, Raghavan K, Balamurugan S, Ramalingam PVaiyapuri, Nair S.  2010.  Phylogenetic diversity of rhizobia associated with horsegram. Current Microbiology. 62:1238.

Chinnaswamy A, Narayanasamy S, Vaiyapuri PRamalingam, Nair S.  2009.  A significant proportion of indigenous rhizobia from India associated with soybean (Glycine max L.) distinctly belong to Bradyrhizobium and Ensifer genera. Biology and Fertility of Soils. 46(1):63.