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Phys Rev B Condens Matter
; 42(12): 7487-7496, 1990 Oct 15.
Article
in English
| MEDLINE
| ID: mdl-9994894
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Phys Rev B Condens Matter
; 39(14): 9987-9991, 1989 May 15.
Article
in English
| MEDLINE
| ID: mdl-9947776