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Phys Rev B Condens Matter
; 41(1): 769-771, 1990 Jan 01.
Article
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| MEDLINE
| ID: mdl-9992816
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Phys Rev B Condens Matter
; 40(1): 413-416, 1989 Jul 01.
Article
in English
| MEDLINE
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Phys Rev B Condens Matter
; 36(4): 2030-2035, 1987 Aug 01.
Article
in English
| MEDLINE
| ID: mdl-9943049