New Heavy Flavor Contributions to the DIS Structure Function   $F_2(x,Q^2)$ at $O(\alpha_s^3)
  We report on recent results obtained for the massive Wilson coefficients which contribute to the structure function $F_2(x,Q^2)$ at $O(\alpha_s^3)$ in the region $Q^2/m^2 \gsim 10$. In the calculation new species of harmonic sums and harmonic polylogarithms generated by cyclotomic polynomials arise in intermediary results which are briefly discussed. 
J. Ablinger, J. Bl\"umlein, A. Hasselhuhn, S. Klein, C. Schneider, F.   Wi{\ss}brock
hep-ph hep-ex math-ph math.AG math.MP