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Phys Rev B Condens Matter
; 37(7): 3755-3758, 1988 Mar 01.
Article
in English
| MEDLINE
| ID: mdl-9944992
2.
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Phys Rev B Condens Matter
; 35(16): 8767-8769, 1987 Jun 01.
Article
in English
| MEDLINE
| ID: mdl-9941247