Peking University Library: http://www.lib.pku.edu.cn/

National Natural Science Foundation: http://www.nsfc.gov.cn/

American Mathematical Society: http://www.ams.org

Chern Institute of Mathematics: http://www.nim.nankai.edu.cn/

Zhongmin Shen: http://www.math.iupui.edu/~zshen/

S. Gudmundsson: http://www.maths.lth.se/matematiklu/personal/sigma/

Chinese Mathematical Society: http://www.cms.org.cn/

Center of Mathematical Sciences, Zhejiang University: http://www.cms.zju.edu.cn/

Miaomiao Zhu:http://www.math.ethz.ch/~mzhu

Australian Mathematical Society: http://www.austms.org.au/

Canadian Mathematical Society: http://www.math.ca/

The London Mathematical Society: http://www.lms.ac.uk/