1. Kumar V, and Rao C, J Min Mater Chem Eng 9 (2010) 43.
2. Radhika N, Shivaram P, and Vijaykarthik K T, J Eng Sci Technol 10 (2015) 258.
3. Baghel A S, and Prasad V, Int J Sci Res 319 (2013) 64.
4. Venkat P, Subramanian S, Radhika N, Anandavel B, and Praveen N, Eur J Sci Res 53 (2011) 280.
5. Liu Y, Zhou J, and Shen T, Mater Des 45 (2013) 67.