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Phys Rev B Condens Matter
; 50(21): 15993-16000, 1994 Dec 01.
Article
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| MEDLINE
| ID: mdl-9975968
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Phys Rev B Condens Matter
; 48(6): 4223-4226, 1993 Aug 01.
Article
in English
| MEDLINE
| ID: mdl-10008891
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Phys Rev B Condens Matter
; 48(1): 615-618, 1993 Jul 01.
Article
in English
| MEDLINE
| ID: mdl-10006822
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Phys Rev B Condens Matter
; 46(21): 14089-14094, 1992 Dec 01.
Article
in English
| MEDLINE
| ID: mdl-10003479