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Phys Rev B Condens Matter
; 45(5): 2046-2049, 1992 Feb 01.
Article
in English
| MEDLINE
| ID: mdl-10001717
2.
Phys Rev B Condens Matter
; 44(2): 575-583, 1991 Jul 01.
Article
in English
| MEDLINE
| ID: mdl-9999156