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Phys Rev B Condens Matter
; 38(4): 2922-2925, 1988 Aug 01.
Article
in English
| MEDLINE
| ID: mdl-9946626
2.
Phys Rev B Condens Matter
; 33(8): 5844-5847, 1986 Apr 15.
Article
in English
| MEDLINE
| ID: mdl-9939103