1. Analytic Inequalities;Mitrinovic,1970
2. Jordan’s inequality;Yuefeng;Math. Mag.,1996
3. On generalizations and refinements of Jordan type inequality;Wu;RGMIA Research Report Collection,2004
4. Lower and upper bounds of ζ(3);Luo;RGMIA Research Report Collection,2001
5. Distribution of Values and New Research;Yang,1982