Evaluations for zeta(2),zeta(4),...,zeta(2k)based on the WZ method
  Based on the framework of the WZ theory, a new evaluation for $\varsigma (2) = \frac{\pi ^2}{6}$ and $\varsigma (4) = \frac{\pi ^4}{90}$ was given respectively, finally, a new recurrence formula for $\varsigma (2k)$ was given. 
Yijun Chen
math.CO math.CA math.HO