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Phys Rev B Condens Matter
; 43(15): 12580-12589, 1991 May 15.
Article
in English
| MEDLINE
| ID: mdl-9997060
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Phys Rev B Condens Matter
; 40(2): 1257-1264, 1989 Jul 15.
Article
in English
| MEDLINE
| ID: mdl-9991951