00381nam a2200133Ia 45000030006000000080041000060400015000471000017000622450065000792600068001443000006002125460012002180050017002300STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aPoonam Bhatt  aIndian Journal of Pure and Applied Physics Vol.45, Oct: 2007  bNational Institute of Sciece Communication and Infc2007aDelhi  a0  aEnglish20220125165834.0