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Phys Rev B Condens Matter
; 37(3): 1287-1293, 1988 Jan 15.
Article
in English
| MEDLINE
| ID: mdl-9944637
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Phys Rev B Condens Matter
; 36(12): 6681-6684, 1987 Oct 15.
Article
in English
| MEDLINE
| ID: mdl-9942386