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Phys Rev B Condens Matter
; 50(6): 3570-3576, 1994 Aug 01.
Article
in English
| MEDLINE
| ID: mdl-9976633
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Phys Rev B Condens Matter
; 47(10): 6110-6113, 1993 Mar 01.
Article
in English
| MEDLINE
| ID: mdl-10004562