1.
Phys Rev B Condens Matter
; 49(18): 12990-12997, 1994 May 01.
Article
in English
| MEDLINE
| ID: mdl-10010211
2.
Specific heat of defects in Haldane systems Y2BaNiO5 and NENP: Absence of free spin-1/2 excitations.
Phys Rev Lett
; 72(19): 3108-3111, 1994 May 09.
Article
in English
| MEDLINE
| ID: mdl-10056069
3.
4.
Phys Rev B Condens Matter
; 44(2): 888-891, 1991 Jul 01.
Article
in English
| MEDLINE
| ID: mdl-9999206
5.
6.