Siegen

发表

Germany, Columbus, K. K. Gan, 2005, physics/0504142.

Columbus, H Germany, T. O. S. University, 2005, physics/0504142.

Heidelberg, H. Sander, C. Grupen, 2005 .

H Germany, H. Dahmen, Poland, 1999, hep-th/9910024.

Armenia, Stony Brook University, Shandong, 2023, Physics Letters B.