R.  Radha, Muthurajan, H., N. Rao, K., Pradhan, S., Gupta, U. N., Jha, R. Kumar, Mirji, S. A., and Ravi, V., ?Low temperature synthesis and characterization of BiNbO4 powders?, Materials Characterization, vol. 59, no. 8, pp. 1083-1087, 2008.

H.  Muthurajan, Kumar, H. H., N. Rao, K., Pradhan, S., Jha, R. Kumar, and Ravi, V., ?Low temperature synthesis of SrNb2O6 and SrTa2O6 using hydroxide precursor?, Materials Letters, vol. 62, no. 6-7, pp. 892-894, 2008.