Contact

Prof. Ai-Xiang
College of Science
Xi'an Jiaotong University
Xi'an 710049, China
tel: 86-29-82668051
fax: 86-29-83237910
email: axhuang@mail.xjtu.edu.cn

Prof. Jinyun Yuan
Departamento de Matemática
Federal University of Paraná
Curitiba, Brazil
tel. and fax: +55-41-3361-3400
or +55-41-3271-7885
email: yuanjy@gmail.com