Do Ngoc Diep, Prof. in Math., DSc., PhD,

Institute of Mathematics (VienToanhoc)

I think the journal is well organised, everything is good, service is fast and good. Only one thing is that as a standard of high quality journal in mathematics, I think you should produce journal using TeX/LaTeX. Any version of words+equations, etc... is not appropriate to to produce high quality mathematical journal. I was very happy and it was a very productive cooperation. I am convinced that you are a publishing house one can trust.