00355pam a2200121 a 4500020000500000041000800005082001300013100003000026245007200056260005700128300001600185653003200201  c  aeng  a050bBHA  aBhatt Poonam .,eAuthor .  aIndian Journal of pure & Applied Physics  Vol - 44 ,hBound Volumes  a[s.l]:bNational  Institute of Science CSIR ,c2006.  bHB;c28*20.  aGeneral serial publications