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Phys Rev B Condens Matter
; 39(14): 9831-9838, 1989 May 15.
Article
in English
| MEDLINE
| ID: mdl-9947757
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Phys Rev B Condens Matter
; 31(12): 7526-7539, 1985 Jun 15.
Article
in English
| MEDLINE
| ID: mdl-9935693