[2] viXra:1403.0452 submitted on 2014-03-21 05:53:53, (32 unique-IP downloads)
Authors: Xu Zhefeng
Category: General Mathematics
[1] viXra:1403.0397 submitted on 2014-03-21 07:13:01, (109 unique-IP downloads)
Authors: Xu Zhefeng
Category: General Mathematics