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Phys Rev B Condens Matter
; 37(15): 8575-8587, 1988 May 15.
Article
in English
| MEDLINE
| ID: mdl-9944217
2.
Phys Rev B Condens Matter
; 31(9): 5604-5615, 1985 May 01.
Article
in English
| MEDLINE
| ID: mdl-9936554