1.
Phys Rev B Condens Matter
; 44(14): 7614-7624, 1991 Oct 01.
Article
in English
| MEDLINE
| ID: mdl-9998677
2.
Phys Rev B Condens Matter
; 42(4): 2639-2642, 1990 Aug 01.
Article
in English
| MEDLINE
| ID: mdl-9995738