References
- Hanske-Petitpierre , O. , Yacoby , Y. , Mustre de Leon , J. , Stern , E. A. and Rehr , J. J. 1991 . Phys, Rev., B , 44 : 6700
- Sawyer , C. B. and Tower , C. H. 1930 . Phys, Rev. , 35 : 269
- Toulouse , J. , DiAntonio , P. , Vugmeister , B. E. , Wang , X. M. and Knauss , L. A. 1992 . Phys. Rev. Lett. , 68(2) : 232
- Vugmeister , B. E. and Adhikari , P. to be published in current issue