00375nam a2200133Ia 45000030006000000080041000060400015000471000017000622450071000792600056001503000006002065460012002120050017002240STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aPoonam Bhatt  aIndian Journal of Pure and Applied Physics Vol-45. No.-3, Mar-2007  bIndian National Science Academy; Delhic2007aDelhi  a0  aEnglish20220125165834.0