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Phys Rev B Condens Matter
; 40(14): 9895-9899, 1989 Nov 15.
Article
in English
| MEDLINE
| ID: mdl-9991515
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Phys Rev B Condens Matter
; 36(16): 8877-8880, 1987 Dec 01.
Article
in English
| MEDLINE
| ID: mdl-9942735