A. Demichev
发表
M. Chaichian,
A. Tureanu,
P. Prešnajder,
2000,
hep-th/0007156.
Masud Chaichian,
Andrey Demichev,
M. Chaichian,
2001
.
A. Demichev,
1997,
hep-th/9701079.