S. B.  Deshpande, Khollam, Y. B., Bhoraskar, Y. B., Date, S. K., Sainkara, S. R., and Potdar, H. S., ?Synthesis and characterization of microwave-hydrothermally derived Ba1-xSrxTiO3 powders?, Materials Letters, vol. 59, no. 2-3, pp. 293-296, 2005.