2013
by Tiwari A., Tursky M. L., Mushahary D., Wasnik S., Collier F. M., Suma K., Kirkland M. A., and Pande G, 2013.
2010
by Khattri A., S. S. Bhushan, V. Sireesha, N. J. Gupta, B. N. Chakravarty, M. Deendayal, S. Prasad, L. Singh and K. Thangaraj, 2010.
2008
by Prabhakara K., Damien L. Bruno, Priya Padman, Suma Prasad, R. Sudheer Kumar, Howard R. Slater, and A. Radha Ramadevi, 2008.
2004
by Prabhakara K., Wyandt H. E., Huang X. L., Prasad K. S., and Ramadevi A. R., 2004.