[4] Siby Mathew, P R Rejikumar , Jaimon Yahannan, K T Mathew and N V Unnikrishnan, Microwave Studies on the Dielectric Properties of Sm3+ and Sm3+/CdTe Doped Sol-Gel Silica Glasses J.Alloys. Comp. 462 (2008)456
[4] Siby Mathew, P R Rejikumar , Jaimon Yahannan, K T Mathew and N V Unnikrishnan, Microwave Studies on the Dielectric Properties of Sm3+ and Sm3+/CdTe Doped Sol-Gel Silica Glasses J.Alloys. Comp. 462 (2008)456
