1. T. Arakawa, M. Kaneko, Multiple zeta values, poly-Bernoulli numbers, and related zeta functions, Nagoya Math. J.
2. T. Arakawa, M. Kaneko, Multiple zeta values, poly-Bernoulli numbers, and related zeta functions, Proceedings, Symposium in Tsudajyuku Univ, 1997, 2, 133, 144
3. Explicit evaluation of Euler sums;Borwein;Proc. Edinburgh Math. Soc.,1995
4. Multiple harmonic series;Hoffman;Pacific J. Math.,1992
5. On Tornheim's double series;Huard;Acta Arith.,1996